Trackademia

Welcome to Trackademia

The idea behind Trackademia is to build on existing academic databases like Google Scholar and OpenAlex so that you can trust the data and use it for whatever you want. That comes down to two things.

More data, and more ways to use it. We aggregate publication data from every major source into a single dataset and add information pulled from faculty CVs. Then we let you slice it however you want: choose which sources to build from, write your own formulas, weight journals, adjust for department size.

More accurate, and honest about where it isn’t. We focus on a smaller set of schools so we can verify everything carefully. Faculty lists come from department websites rather than being inferred from publication records, so we know who should be in the data before we go looking. When we can’t find data on someone, we record the gap instead of dropping them. Every number comes with a coverage rate you can check against ground truth.

Everything in Trackademia is built from seven units. AI merges duplicate records across sources and tags each publication so these categories hold up:

  • Publication — citation counts, authors, journal, peer review status, and more
  • Publication group — versions of the same work combined into one entity, such as a working paper and the article it became
  • Academic
  • Department
  • University
  • Field
  • Journal

There are two modes. In Database mode you browse the underlying records and filter by any of the seven units. In Analytics mode you get graphs and comparisons, and you switch views to compare two departments, compare one department against the average of the others, or see them all at once. Tabs let you focus on a particular level of the data.

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Journal

The Journal of Physical Chemistry Letters

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Citation weight

Tierunranked
Weight in force
Weightingoff

Weight inputs

Each figure with its percentile among the ranked journals. A is the median, over the academics with a work here, of that academic’s citations to the works this site counts for them - never a Google Scholar profile total. Over every academic of this field, all years, whatever the filters select.

A · academics’ median10,796.5 · 41%
B · citations per work69.5 · 32%
N · works173 · 84%
P · academics42 · 83%
Formula result0.619

From this institution

Under these filters. A work with no citation count is unknown here, never a zero.

Works172
Citations8,343 over 120 of 172 works
Citations per counted work69.5
Weighted citations
Academics42
Departments8
First seen2010

Works placed per year

172 of these 172 works carry a year; an undated work is in no year. Works placed, under these filters.

Departments publishing there 8

DepartmentWorks
Princeton Chemistry59
Penn Chemistry33
Brown Chemistry27
Columbia Chemistry27
Yale Chemistry17
Cornell Chemistry8
Harvard Chemistry7
Dartmouth Chemistry1

A work held by two departments counts once in each, so these add up to more than the works above.

Works placed there 172

YearTitleAcademicsCitations
2015Charge carriers in hybrid organic-inorganic lead halide perovskites might be protected as large polaronsXiaoyang Zhu713
2016Mechanism for Broadband White-Light Emission from Two-Dimensional (110) Hybrid PerovskitesXiaoyang Zhu601
2015Ferroelectric domain wall induced band gap reduction and charge separation in organometal halide perovskitesAndrew M. Rappe395
2010Intrinsic charge trapping in organic and polymeric semiconductors: a physical chemistry perspectiveXiaoyang Zhu301
2015Are mobilities in hybrid organic–inorganic halide perovskites actually “high”?Andrew M. Rappe290
2015First-principles calculation of the bulk photovoltaic effect in CH3NH3PbI3 and CH3NH3PbI3–xClxAndrew M. Rappe255
2014Hard Numbers for Large Molecules: Toward Exact Energetics for Supramolecular SystemsRobert A. DiStasio Jr.229
2021Orbital Optimized Density Functional Theory for Electronic Excited StatesDiptarka Hait219
2017Multicomponent density functional theory: Impact of nuclear quantum effects on proton affinities and geometriesSharon Hammes-Schiffer167
2020The Ground State Electronic Energy of BenzeneDiptarka Hait154
2020Highly Accurate Prediction of Core Spectra of Molecules at Density Functional Theory Cost: Attaining Sub-electronvolt Error from a Restricted Open-Shell Kohn-Sham ApproachDiptarka Hait150
2015Polarization Dependence of Water Adsorption to CH3NH3PbI3 (001) SurfacesAndrew M. Rappe149
2011A simple Marcus-theory type model for hydrogen atom transfer/proton-coupled electron transferJames Mayer136
2018Delocalization errors in density functional theory are essentially quadratic in fractional electron numberDiptarka Hait133
2016Limits of Carrier Diffusion in n-Type and p-Type CH3NH3PbI3 Perovskite Single CrystalsJonathan S. Owen · Xavier Roy131
2018Synthesis of All-Inorganic Cd-Doped CsPbCl3 Perovskite Nanocrystals with Dual-Wavelength EmissionBrenda Rubenstein · Ou Chen121
2016Photoferroelectric and photopiezoelectric properties of organometal halide perovskitesAndrew M. Rappe118
2021Quantum Dot Photocatalysts for Organic TransformationsOu Chen115
2021Regularized second order Møller-Plesset theory: A more accurate alternative to conventional MP2 for noncovalent interactions and transition metal thermochemistry for the same …Joonho Lee114
2017Is the accuracy of density functional theory for atomization energies and densities in bonding regions correlated?Sharon Hammes-Schiffer109
2018Pressure-Induced Phase Transformation and Bandgap Engineering of Formamidinium Lead Iodide Perovskite NanocrystalsBrenda Rubenstein · Ou Chen107
2012Isomer-specific IR-IR Double-Resonance Spectroscopy of D2-Tagged, Protonated Dipeptides Prepared in a Cryogenic Ion TrapMark Johnson106
2011Anomalously Large Polarization Effect Responsible for Excitonic Red Shifts in PbSe Quantum Dot SolidsXiaoyang Zhu103
2019Ultrafast Charge Separation in Two-Dimensional CsPbBr3 Perovskite NanoplateletsTianquan “Tim” Lian94
2020Real-time time-dependent nuclear-electronic orbital approach: Dynamics beyond the Born-Oppenheimer approximationSharon Hammes-Schiffer94
2019Optical Properties of Layered Hybrid Organic-Inorganic Halide Perovskites: A Tight-Binding GW-BSE StudyTimothy C Berkelbach91
2015Structural evidence of amyloid fibril formation in the putative aggregation domain of TDP-43Ann E. McDermott90
2019Understanding missing entropy in coarse-grained systems: Addressing issues of representability and transferabilityJaehyeok Jin88
2021Regional embedding enables high-level quantum chemistry for surface scienceTimothy C Berkelbach82
2020Double hangman iron porphyrin and the effect of electrostatic nonbonding interactions on carbon dioxide reductionMiguel I. Gonzalez80
2018Multicomponent time-dependent density functional theory: Proton and electron excitation energiesSharon Hammes-Schiffer80
2011Structural Variations of an Organic Glassformer Vapor-Deposited onto a Temperature Gradient StageZahra Fakhraai76
2014How to Draw Energy Level Diagrams in Excitonic Solar CellsXiaoyang Zhu74
2014Probing nonadiabaticity in the proton-coupled electron transfer reaction catalyzed by soybean lipoxygenaseSharon Hammes-Schiffer72
2011Magnetic Field Control of the Current through Molecular Ring JunctionsAbraham Nitzan70
2013Exploring Adsorption of Water and Ions on Carbon Surfaces using a Polarizable Force Field.William Jorgensen69
2011Current theoretical challenges in proton-coupled electron transfer: Electron-proton nonadiabaticity, proton relays, and ultrafast dynamicsSharon Hammes-Schiffer68
2021Excited state intramolecular proton transfer with nuclear-electronic orbital Ehrenfest dynamicsSharon Hammes-Schiffer64
2015Simulating excited state dynamics in systems with multiple avoided crossings using mapping variable ring polymer molecular dynamicsNandini Ananth62
2019Third-order Møller–Plesset perturbation theory made useful? Choice of orbitals and scaling greatly improves accuracy for thermochemistry, kinetics, and intermolecular interactionsJoonho Lee62
2020Multicomponent orbital-optimized perturbation theory methods: Approaching coupled cluster accuracy at lower costSharon Hammes-Schiffer62
2017Electrostatic Screening of Charged Defects in Monolayer MoS 2Xiaoyang Zhu59
2010Quantifying membrane curvature generation of Drosophila amphiphysin N-BAR domainsTobias Baumgart59
2013Hiding in Plain Sight: Unmasking the Diffuse Spectral Signatures of the Protonated N-Terminus in Simple PeptidesMark Johnson56
2011Unraveling the anomalous solvatochromic response of the formate ion vibrational spectrum: An infrared, Ar-tagging study of the HCO2 ¯, DCO2 ¯, and HCO2 ¯•H2O ionsMark Johnson56
2019Reducing Optical Gain Threshold in Two-Dimensional CdSe Nanoplatelets by Giant Oscillator Strength Transition EffectTianquan “Tim” Lian55
2020Halogen bonding facilitates intersystem crossing in iodo-BODIPY chromophoresDavid M. Chenoweth54
2019The Simplest Possible Approach for Simulating S0−S1 Conical Intersections with DFT/TDDFT: Adding One Doubly Excited ConfigurationJoseph Subotnik52
2011Isotope effects on the nonequilibrium dynamics of ultrafast photoinduced proton-coupled electron transfer reactions in solutionSharon Hammes-Schiffer51
2020Understanding the Dipole Moment of Liquid Water from a Self-Attractive Hartree DecompositionTianyu Zhu49
2020Solvent mediated excited state proton transfer in indigo carmineEric Arsenault49
2012Derivative Couplings with Built-In Electron-Translation Factors: Application to Benzene.Joseph Subotnik46
2019Chiral Water Superstructures around Antiparallel β‑Sheets Observed by Chiral Vibrational Sum Frequency Generation SpectroscopyE. Chui-Ying Yan45
2015Phase space structures explain hydrogen atom roaming in formaldehyde decompositionGregory Sion Ezra43
2024Transferability and Accuracy of Ionic Liquid Simulations with Equivariant Machine Learning Interatomic PotentialsJarad Mason43
2017High-Efficiency Optical Gain in Type-II Semiconductor Nanocrystals of Alloyed Colloidal Quantum WellsTianquan “Tim” Lian43
2013Structural Dynamics and Charge Transfer in Electronically Excited N,N’- DimethylpiperazinePeter Weber42
2022Ground-state properties of metallic solids from ab initio coupled-cluster theoryTimothy C Berkelbach42
2015Characterization of Parallel β-Sheets at Interfaces by Chiral Sum Frequency Generation SpectroscopyE. Chui-Ying Yan41
2011When the Heterogeneous Appears Homogeneous: Discrepant Measures of Heterogeneity in Single Molecule ObservablesLaura J. Kaufman39
2015Nuclear Dynamics at Molecule-Metal Interfaces: A pseudoparticle perspectiveAbraham Nitzan37
2018Accurate Predictions of Dipole-Bound Anion Binding Energies via Quantum Monte CarloBrenda Rubenstein35
2025The Quantum Information Science Challenge for ChemistryKang-Kuen Ni33
2019Amine Dynamics in Diamine-Appended Mg2(dobpdc) Metal-Organic FrameworksJeffrey R. Long · Phillip Milner32
2022Quantum Simulations of Vibrational Strong Coupling via Path IntegralsAbraham Nitzan · Joseph Subotnik · Sharon Hammes-Schiffer32
2010Isolating the spectral signatures of individual sites in water networks using vibrational double-resonance spectroscopy of cluster isotopomersMark Johnson32
2018Electron-Hole-Pair-Induced Vibrational Energy Relaxation of Rhenium Catalysts on Gold SurfacesTianquan “Tim” Lian30
2011Raman scattering and electronic heating in molecular conduction junctionsAbraham Nitzan30
2022Modeling Spin-Dependent Nonadiabatic Dynamics with Electronic Degeneracy: A Phase-Space Surface-Hopping MethodJoseph Subotnik30
2015Does Nonadiabatic Transition State Theory Make Sense Without Decoherence?Joseph Subotnik30
2020Colloidal Assembly of Au-Quantum Dot-Au Sandwiched Nanostructures with Strong Plasmon-Exciton CouplingOu Chen29
2010Mixing at the Charged Interface of a Polymer Semiconductor and a Polyelectrolyte DielectricXiaoyang Zhu28
2022Quantifying the Ligand-Induced Triplet Energy Transfer Barrier in a Quantum Dot-Based Upconversion SystemTianquan “Tim” Lian28
2020Local Atomic Heat Currents and Classical Interference in Single- Molecule Heat ConductionAbraham Nitzan28
2020Broad-Band Near-Infrared Doublet Emission in a Tetrathiafulvalene-Based Metal–Organic FrameworkXiaoyang Zhu25
2023Electron Trapping Prolongs the Lifetime of Charge-Separated States in 2D Perovskite Nanoplatelet-Hole Acceptor ComplexesTianquan “Tim” Lian25
2023Coherent dynamic nuclear polarization using chirped pulsesYifan Quan25
2015Charge Saturation and Intrinsic Doping in Electrolyte-Gated Organic SemiconductorsXiaoyang Zhu24
2022Near-Infrared Plasmon-Induced Hot Electron Extraction Evidence in an Indium Tin Oxide Nanoparticle/Monolayer Molybdenum Disulfide HeterostructureXiaoyang Zhu24
2022Strong Coupling in Infrared Plasmonic CavitiesAbraham Nitzan24
2020Polarization of Valence Orbitals by the Intramolecular Electric Field from a Diffuse Dipole-Bound ElectronBrenda Rubenstein · Lai-Sheng Wang23
2021Optical Anisotropy and Phase Transitions in Lead Halide PerovskitesXiaoyang Zhu22
2018Autodetachment from vibrationally excited vinylidene anionsMarissa Weichman22
2020Transient drude response dominates near-infrared pump–probe reflectivity in nodal-line semimetals ZrSiS and ZrSiSeLeslie Schoop22
2024Accurate excitation energies of point defects from fast particle–particle random phase approximation calculationsTianyu Zhu22
2010Ultrafast Dynamics of Highly Excited Trans-Stilbene: A Different TwistPeter Weber21
2022Role of Molecular Layering in the Enhanced Mechanical Properties of Stable GlassesPatrick J. Walsh · Zahra Fakhraai21
2016Self-interaction corrected functional calculations of the CH3CN- dipole bound anionPeter Weber20
2022Integrated, stretched, and adiabatic solid effectsYifan Quan20
2022Symmetric Post-Transition State Bifurcation Reactions with Berry Pseudomagnetic FieldsJoseph Subotnik20
2023Can spin-component scaled MP2 achieve kJ/mol accuracy for cohesive energies of molecular crystals?Timothy C Berkelbach18
2016Performance of Protein-Ligand Force Fields for the Flavodoxin - Flavin Mononucleotide ComplexWilliam Jorgensen18
2020Exploring the Magnetic Properties of the Largest Single-Molecule MagnetsMatthew Coley-O'Rourke17
2025Different Charge Transport Mechanisms in Ti 3 C 2 T x MXene Monoflakes and MultiflakesZahra Fakhraai17
2022Periodic coupled-cluster Green’s function for photoemission spectra of realistic solidsTianyu Zhu17
2022Concerted electron-nuclear motion in proton-coupled electron transfer-driven Grotthuss-type proton translocationEric Arsenault17
2024A linearized semiclassical dynamics study of the multiquantum vibrational relaxation of NO scattering from a Au (111) surfaceNandini Ananth15
2019A Predictive Semiclassical Model for Coherent and Incoherent Emission in the Strong Field Regime: The Mollow Triplet RevisitedAbraham Nitzan · Joseph Subotnik15
2018Kinetic Schemes in Open Interacting SystemsAbraham Nitzan15
2023Resonant mixing dynamic nuclear polarizationYifan Quan15
2023Characterizing interfaces by Voronai tessellationE. Chui-Ying Yan · Sharon Hammes-Schiffer15
2018A Necessary Trade-off for Semiclassical Electrodynamics: Accurate Short-Range Coulomb Interactions versus the Enforcement of Causality?Abraham Nitzan · Joseph Subotnik14
2023Statistical Mechanical Design Principles for Coarse-Grained Interactions Across Different Conformational Free Energy SurfacesJaehyeok Jin13
2022Uniting Nonempirical and Empirical Density Functional Approximation Strategies Using Constraint-Based RegularizationRobert A. DiStasio Jr.12
2013High-resolution imaging of electric field enhancement of a single silver nanowire using QD modified AFM tipsTianquan “Tim” Lian12
2025Conical intersections and electronic momentum as viewed from phase space electronic structure theoryJoseph Subotnik12
2024Measuring the electric fields of ions captured in crown ethersSharon Hammes-Schiffer12
2025Regularized Perturbation Theory for Ab Initio SolidsJoonho Lee10
2024Dynamic nuclear polarization with P1 centers in diamondYifan Quan10
2020Ab Initio Linear and Pump–Probe Spectroscopy of Excitons in Molecular CrystalsTimothy C Berkelbach9
2023Nonadiabatic Potential Energy Surfaces for a Molecule on a Surface as Found by Constrained Complete Active Space TheoryJoseph Subotnik9
2024Electro-inductive Effects and Molecular Polarizability for Vibrational Probes on Electrode SurfacesSharon Hammes-Schiffer · Tianquan “Tim” Lian8
2021Observation of Electric-Field-Induced Liberation of Guest Molecules from Clathrate HydrateChristoph Rose-Petruck7
2025Isotope Effects for Water at Pt(111) Computed with Nuclear-Electronic Orbital TheorySharon Hammes-Schiffer · Yao Yang6
2026Phase Space Electronic Structure Theory: From Diatomic Lambda-Doubling to Macroscopic Einstein–de HaasJoseph Subotnik5
2018Bimolecular reaction dynamics in the phenyl-silane system: Exploring the prototype of a radical substitution mechanismDiptarka Hait4
2025Temperature-Dependent Exciton Dynamics of Cs4CuSb2Cl12 Layered Double Perovskite Nanocrystal Thin FilmsOu Chen3
2025Control of Reversible Oxidative Addition/Reductive Elimination of Surface-Attached Catalysts by External Electric FieldsTianquan “Tim” Lian3
2024Spin-Dependent Stereochemistry: A Nonadiabatic Quantum Dynamics Case Study of S + H2 → SH + H ReactionJoseph Subotnik3
2020Charge Transfer Through Redox Molecular Junctions in Non- Equilibrated SolventsAbraham Nitzan0
2018Determining Orientations of Optical Transition Dipole Moments using Ultrafast X-Ray ScatteringPeter Weber
2021Transient Symmetry Controls Photo Dynamics near Conical IntersectionsPeter Weber
2017Observation of Structural Wavepacket Motion: The Umbrella Mode in Rydberg- Excited N‐Methyl MorpholinePeter Weber
2019Resonant Two-Photon Photoelectron Imaging and Intersystem Crossing from Excited Dipole-Bound States of Cold AnionsLai-Sheng Wang
2017High-Resolution Photoelectron Imaging of Cryogenically-Cooled C59N– and (C59N)22– Azafullerene AnionsLai-Sheng Wang
2019Au60−: The Smallest Gold Cluster with the High-Symmetry Icosahedral Core Au13Lai-Sheng Wang
2018Determination of CO Adsorption Sites on Gold Clusters Aun− (n = 21-25) − A Size Region That Bridges the Pyramidal and Core-Shell StructuresLai-Sheng Wang
2015Conformation-Selective Resonant Photoelectron Spectroscopy via Dipole-Bound States of Cold AnionsLai-Sheng Wang
2011Chemsorption-Induced 2D-3D-2D Structural Transitions in Gold Heptamer: (CO)nAu7– (n = 1-4)Lai-Sheng Wang
2021How O2-Binding Affect Structural Evolution of Medium Even-Sized Gold Clusters Aun− (n = 20−34)Lai-Sheng Wang
2015Vibrational State-Selective Resonant Two-Photon Photoelectron Spectroscopy of AuS– via a Spin-Forbidden Excited StateLai-Sheng Wang
2020Observation of Boron-Metal Quadruple Bonding in RhB(BO–) and RhBLai-Sheng Wang
2022Observation of Core-Excited Dipole-Bound StatesLai-Sheng Wang
2022Investigation of the Electronic and Vibrational Structures of the 2-Furanyloxy Radical using Photoelectron Imaging and Photodetachment Spectroscopy via the Dipole-Bound State of the 2-Furanyloxide AnionLai-Sheng Wang
2019Probing the Critical Dipole Moment to Support Excited Dipole-Bound States in Valence-Bound AnionsLai-Sheng Wang
2022Relativistic Orbital Optimized Density Functional Theory for Accurate Core-Level SpectroscopyDiptarka Hait
2015Infrared Spectroscopic Study of Vibrational Modes in Methylammonium Lead Halide PerovskitesJonathan S. Owen
2011Tuning the Surface Structure and Optical Properties of CdSe Clusters Using Coordination ChemistryJonathan S. Owen
2025Learning Molecular Conformational Energies Using Semilocal Density FingerprintsRobert A. DiStasio Jr.
2022Prediction of Multiple Hydrogen Ligation at a Vanadium(II) Site in a Metal-Organic FrameworkJeffrey R. Long
2026Interference-Limited Absorption in Dense Molecular Nanolayers Near Reflecting SurfacesJoseph Subotnik
2024When a twist makes a difference: Exploring PCET and ESIPT on non-planar hydrogen-bonded donor-acceptor systemSharon Hammes-Schiffer
2022Multicomponent orbital optimized perturbation theory with density fitting: Anharmonic zero-point energies in protonated water clustersSharon Hammes-Schiffer
2019Molecular vibrational frequencies within the nuclear-electronic orbital frameworkSharon Hammes-Schiffer
2020Nuclear-electronic orbital multistate density functional theorySharon Hammes-Schiffer
2023Generalized nuclear-electronic orbital multistate density functional theory for multiple proton transfer processesSharon Hammes-Schiffer
2021Artificial neural networks as mappings between proton potentials, wave functions, densities, and energy levelsSharon Hammes-Schiffer
2020Excited state molecular dynamics of photoinduced proton-coupled electron transfer in anthracene-phenol-pyridine triadsSharon Hammes-Schiffer
2024Squeezed protons and infrared plasmonic resonance energy transferSharon Hammes-Schiffer
2016Computational insights into five- versus six-coordinate iron center in ferrous soybean lipoxygenaseSharon Hammes-Schiffer
2015Role of solvent dynamics in photoinduced proton-coupled electron transfer in a phenol-amine complex in solutionSharon Hammes-Schiffer
2013Theoretical design of molecular electrocatalysts with flexible pendant amines for hydrogen production and oxidationSharon Hammes-Schiffer
2023Nuclear-electronic orbital quantum mechanical/molecular mechanical real-time dynamicsSharon Hammes-Schiffer
2022Multidimensional quantum dynamical simulation of infrared spectra under polaritonic vibrational strong couplingSharon Hammes-Schiffer
2024Probing nonadiabaticity of proton-coupled electron transfer in ribonucleotide reductaseSharon Hammes-Schiffer
2021Multicomponent coupled cluster singles and doubles with density fitting: Protonated water tetramers with quantized protonsSharon Hammes-Schiffer
2019Kinetics of proton discharge on metal electrodes: Effects of vibrational nonadiabaticity and solvent dynamicsSharon Hammes-Schiffer
2024A many-body perspective of nuclear quantum effects in aqueous clustersSharon Hammes-Schiffer
2025Computing hydrogen tunneling splittings with nuclear-electronic orbital multireference configuration interactionSharon Hammes-Schiffer
2013Charge-transfer excited states and proton transfer in model guanine-cytosine DNA duplexes in waterSharon Hammes-Schiffer
2019Diagonal Born-Oppenheimer corrections within the nuclear-electronic orbital frameworkSharon Hammes-Schiffer
2023Solvent induced proton polarization within the nuclear-electronic orbital frameworkSharon Hammes-Schiffer
2020Frequency and time domain nuclear-electronic orbital equation-of-motion coupled cluster methods: Combination bands and electronic-protonic double excitationsSharon Hammes-Schiffer
2024Nuclear-electronic orbital time-dependent configuration interaction methodSharon Hammes-Schiffer
2011Quantum mechanical/molecular mechanical study of the HDV Ribozyme: Impact of the catalytic metal ion on the mechanismSharon Hammes-Schiffer
2022Correlation between electronic descriptor and proton-coupled electron transfer thermodynamics in doped graphite-conjugated catalystsSharon Hammes-Schiffer
2021Proton-coupled defects impact O·H bond dissociation free energies on metal oxide surfacesSharon Hammes-Schiffer
2021Artificial neural networks as propagators in quantum dynamicsSharon Hammes-Schiffer
2016Assessing the potential effects of active site Mg2+ ions in the glmS ribozyme-cofactor complexSharon Hammes-Schiffer
2023Modeling the weak pH dependence of proton-coupled electron transfer for tryptophan derivativesSharon Hammes-Schiffer
2018Impact of mutations on the binding pocket of soybean lipoxygenase: Implications for proton-coupled electron transferSharon Hammes-Schiffer
2015Calculation of electrochemical reorganization energies for redox molecules at self-assembled monolayer modified electrodesSharon Hammes-Schiffer

Citations as counted, before any journal weight: 120 of these 172 works carry a count, and a work with no count is unknown, never a zero.