Edit Profile (opens in new tab) Riordan, John F. Compute Distance To: Compute Author ID: riordan.john-f Published as: Riordan, John; Riordan, J.; Riordan, John F. more...less External Links: Wikidata · GND · IdRef Documents Indexed: 72 Publications since 1931, including 6 Books Co-Authors: 19 Co-Authors with 24 Joint Publications 739 Co-Co-Authors all top 5 Co-Authors 48 single-authored 6 Carlitz, Leonard 3 Kaplansky, Irving 2 Fagen, R. E. 2 Stein, Paul R. 1 Austin, Thomas L. jun. 1 Becker, H. W. 1 Foata, Dominique C. 1 Gilbert, Edgar Nelson 1 Graham, Ronald Lewis 1 Harary, Frank 1 Mallows, Colin Lingwood 1 McMillan, Brockway 1 Mowshowitz, Abbe 1 Nyquist, Hans 1 Penney, W. F. 1 Rice, Stephen O. 1 Scherberg, Max Goy 1 Sloane, Neil James Alexander 1 Sunde, Erling D. all top 5 Serials 9 Duke Mathematical Journal 8 Journal of Combinatorial Theory 8 Annals of Mathematical Statistics 5 American Mathematical Monthly 5 Bulletin of the American Mathematical Society 3 Bell System Technical Journal 3 Journal of Combinatorial Theory. Series A 2 Discrete Mathematics 2 Acta Mathematica 2 Proceedings of the American Mathematical Society 2 Journal of the Society for Industrial & Applied Mathematics 2 Scripta Mathematica 1 Mathematics of Computation 1 American Journal of Mathematics 1 Canadian Journal of Mathematics 1 Illinois Journal of Mathematics 1 Journal of Combinatorial Theory. Series B 1 Journal of Graph Theory 1 Quarterly of Applied Mathematics 1 Aequationes Mathematicae 1 IBM Journal of Research and Development 1 Journal of the Australian Mathematical Society 1 Mathematical Tables and other Aids to Computation Fields 26 Combinatorics (05-XX) 8 Number theory (11-XX) 2 Probability theory and stochastic processes (60-XX) 1 History and biography (01-XX) 1 Special functions (33-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 59 Publications have been cited 1,960 times in 1,767 Documents Cited by ▼ Year ▼ An introduction to combinatorial analysis. Zbl 0078.00805Riordan, John 639 1958 Combinatorial identities. Zbl 0194.00502Riordan, John 625 1968 Stochastic service systems. Zbl 0106.33601Riordan, John 65 1962 An introduction to combinatorial analysis. Zbl 0436.05001Riordan, John 60 1980 Two element lattice permutation numbers and their \(q\)-generalization. Zbl 0126.26301Carlitz, Leonard; Riordan, John 40 1964 The problem of the rooks and its applications. Zbl 0060.02903Kaplansky, Irving; Riordan, John 38 1946 The distribution of crossings of chords joining pairs of \(2n\) points on a circle. Zbl 0319.05004Riordan, John 33 1975 Mappings of acyclic and parking functions. Zbl 0274.05005Foata, Dominique; Riordan, John 31 1974 The inversion enumerator for labeled trees. Zbl 0242.05004Mallows, C. L.; Riordan, John 31 1968 Ballots and trees. Zbl 0172.01601Riordan, John 28 1969 Symmetry types of periodic sequences. Zbl 0105.25101Gilbert, E. N.; Riordan, John 24 1961 Derivatives of composite functions. Zbl 0063.06505Riordan, John 24 1946 Inverse relations and combinatorial identities. Zbl 0128.01603Riordan, John 22 1964 Enumeration of plane trees by branches and endpoints. Zbl 0308.05115Riordan, John 20 1975 The divided central differences of zero. Zbl 0108.25106Carlitz, Leonard; Riordan, John 20 1963 Forests of labeled trees. Zbl 0157.55001Riordan, John 18 1968 Proof of a conjecture on Genocchi numbers. Zbl 0271.05004Riordan, John; Stein, Paul R. 16 1973 The arithmetic of Bell and Stirling numbers. Zbl 0036.02302Becker, H. W.; Riordan, John 16 1948 Moment recurrence relations for binomial, Poisson and hypergeometric frequency distributions. JFM 63.1084.04Riordan, J. 15 1937 Permutations without 3-sequences. Zbl 0060.02902Riordan, John 15 1945 The blossoming of Schröder’s fourth problem. Zbl 0375.05004Riordan, John 11 1976 Generating functions for powers of Fibonacci numbers. Zbl 0101.28801Riordan, John 10 1962 The number of components in random linear graphs. Zbl 0088.11602Austin, T. L.; Fagen, R. E.; Penney, W. F.; Riordan, John 10 1959 The enumeration of trees by height and diameter. Zbl 0097.25201Riordan, John 9 1960 An introduction to combinatorial analysis. Übersetzung aus dem Englischen von L. E. Sadovskiĭ. Unter Redaktion von L. Ya. Kulikov. (Введение в комбинаторый анализ.) Zbl 0106.24001Riordan, John 9 1963 Moment recurrence relations for binomial, Poisson and hypergeometric frequency distributions. Zbl 0017.17503Riordan, John 9 1937 The distribution of random determinants. Zbl 0057.34905Nyquist, H.; Rice, S. O.; Riordan, J. 9 1954 Combinatorial identities. (Kombinatornye tozhdestva). Transl. from the English. Zbl 0517.05006Riordan, John 8 1982 Enumeration of linear graphs for mappings of finite sets. Zbl 0204.57203Riordan, John 8 1962 The probleme des menages. Zbl 0060.02905Kaplansky, Irving; Riordan, John 8 1946 Congruences for Eulerian numbers. Zbl 0051.27601Carlitz, Leonard; Riordan, John 7 1953 Three-line Latin rectangles. I, II. Zbl 0060.02807Riordan, John 7 1946 A note on Catalan parentheses. Zbl 0301.05003Riordan, John 6 1973 A recurrence relation for three-line latin rectangles. Zbl 0046.00802Riordan, John 6 1952 The enumeration of rooted trees by total height. Zbl 0183.28404Riordan, John; Sloane, N. J. A. 5 1969 The numbers of labeled colored and chromatic trees. Zbl 0077.36801Riordan, John 5 1957 Triangular permutation numbers. Zbl 0042.24803Riordan, John 5 1951 Mutual impedance of grounded wires for horizontally stratified two-layer earth. Zbl 0006.38101Riordan, John; Sunde, Erling D. 4 1933 Ballots and plane trees. Zbl 0231.05011Riordan, John 4 1971 Enumeration of certain two-line arrays. Zbl 0132.25103Carlitz, Leonard; Riordan, John 3 1965 Abel identities and inverse relations. Zbl 0207.02301Riordan, John 3 1969 The number of labeled two-terminal series-parallel networks. Zbl 0075.01101Carlitz, Leonard; Riordan, John 3 1956 A moving single server problem. Zbl 0085.34702McMillan, B.; Riordan, J. 3 1957 Arrangements on chessboards. Zbl 0259.05007Riordan, John; Stein, Paul R. 3 1972 Discordant permutations. Zbl 0058.25003Riordan, John 3 1954 Multiple matching and runs by the symbolic method. Zbl 0063.03138Kaplansky, Irving; Riordan, John 3 1945 Forests of label-increasing trees. Zbl 0409.05026Riordan, John 2 1979 Enumerations for permutations in difference form. Zbl 0101.25106Riordan, John 2 1962 The number of faces of simplicial polytopes. Zbl 0148.01103Riordan, John 2 1966 A note on a q-extension of ballot numbers. Zbl 0157.03504Riordan, John 2 1968 The combinatorial significance of a theorem of Pólya. Zbl 0083.00401Riordan, John 2 1957 Inversion formulas in normal variable mapping. Zbl 0035.08101Riordan, John 2 1949 The solution of a certain recurrence. Zbl 0293.05011Graham, R. L.; Riordan, John 1 1966 A budget of rhyme scheme counts. Zbl 0481.05005Riordan, John 1 1979 A functional-difference equation. Zbl 0138.32001Riordan, J. 1 1966 The enumeration of labeled trees by degrees. Zbl 0142.41301Riordan, John 1 1966 Enumeration of some two-line arrays by extent. Zbl 0216.01701Carlitz, Leonard; Riordan, John 1 1971 Transients in grounded wires lying on the earth’s surface. Zbl 0003.18802Riordan, John 1 1931 Analogue calculation of polynomial and trigonometric expansions. Zbl 0050.13305Scherberg, Max G.; Riordan, John F. 1 1953 Combinatorial identities. (Kombinatornye tozhdestva). Transl. from the English. Zbl 0517.05006Riordan, John 8 1982 An introduction to combinatorial analysis. Zbl 0436.05001Riordan, John 60 1980 Forests of label-increasing trees. Zbl 0409.05026Riordan, John 2 1979 A budget of rhyme scheme counts. Zbl 0481.05005Riordan, John 1 1979 The blossoming of Schröder’s fourth problem. Zbl 0375.05004Riordan, John 11 1976 The distribution of crossings of chords joining pairs of \(2n\) points on a circle. Zbl 0319.05004Riordan, John 33 1975 Enumeration of plane trees by branches and endpoints. Zbl 0308.05115Riordan, John 20 1975 Mappings of acyclic and parking functions. Zbl 0274.05005Foata, Dominique; Riordan, John 31 1974 Proof of a conjecture on Genocchi numbers. Zbl 0271.05004Riordan, John; Stein, Paul R. 16 1973 A note on Catalan parentheses. Zbl 0301.05003Riordan, John 6 1973 Arrangements on chessboards. Zbl 0259.05007Riordan, John; Stein, Paul R. 3 1972 Ballots and plane trees. Zbl 0231.05011Riordan, John 4 1971 Enumeration of some two-line arrays by extent. Zbl 0216.01701Carlitz, Leonard; Riordan, John 1 1971 Ballots and trees. Zbl 0172.01601Riordan, John 28 1969 The enumeration of rooted trees by total height. Zbl 0183.28404Riordan, John; Sloane, N. J. A. 5 1969 Abel identities and inverse relations. Zbl 0207.02301Riordan, John 3 1969 Combinatorial identities. Zbl 0194.00502Riordan, John 625 1968 The inversion enumerator for labeled trees. Zbl 0242.05004Mallows, C. L.; Riordan, John 31 1968 Forests of labeled trees. Zbl 0157.55001Riordan, John 18 1968 A note on a q-extension of ballot numbers. Zbl 0157.03504Riordan, John 2 1968 The number of faces of simplicial polytopes. Zbl 0148.01103Riordan, John 2 1966 The solution of a certain recurrence. Zbl 0293.05011Graham, R. L.; Riordan, John 1 1966 A functional-difference equation. Zbl 0138.32001Riordan, J. 1 1966 The enumeration of labeled trees by degrees. Zbl 0142.41301Riordan, John 1 1966 Enumeration of certain two-line arrays. Zbl 0132.25103Carlitz, Leonard; Riordan, John 3 1965 Two element lattice permutation numbers and their \(q\)-generalization. Zbl 0126.26301Carlitz, Leonard; Riordan, John 40 1964 Inverse relations and combinatorial identities. Zbl 0128.01603Riordan, John 22 1964 The divided central differences of zero. Zbl 0108.25106Carlitz, Leonard; Riordan, John 20 1963 An introduction to combinatorial analysis. Übersetzung aus dem Englischen von L. E. Sadovskiĭ. Unter Redaktion von L. Ya. Kulikov. (Введение в комбинаторый анализ.) Zbl 0106.24001Riordan, John 9 1963 Stochastic service systems. Zbl 0106.33601Riordan, John 65 1962 Generating functions for powers of Fibonacci numbers. Zbl 0101.28801Riordan, John 10 1962 Enumeration of linear graphs for mappings of finite sets. Zbl 0204.57203Riordan, John 8 1962 Enumerations for permutations in difference form. Zbl 0101.25106Riordan, John 2 1962 Symmetry types of periodic sequences. Zbl 0105.25101Gilbert, E. N.; Riordan, John 24 1961 The enumeration of trees by height and diameter. Zbl 0097.25201Riordan, John 9 1960 The number of components in random linear graphs. Zbl 0088.11602Austin, T. L.; Fagen, R. E.; Penney, W. F.; Riordan, John 10 1959 An introduction to combinatorial analysis. Zbl 0078.00805Riordan, John 639 1958 The numbers of labeled colored and chromatic trees. Zbl 0077.36801Riordan, John 5 1957 A moving single server problem. Zbl 0085.34702McMillan, B.; Riordan, J. 3 1957 The combinatorial significance of a theorem of Pólya. Zbl 0083.00401Riordan, John 2 1957 The number of labeled two-terminal series-parallel networks. Zbl 0075.01101Carlitz, Leonard; Riordan, John 3 1956 The distribution of random determinants. Zbl 0057.34905Nyquist, H.; Rice, S. O.; Riordan, J. 9 1954 Discordant permutations. Zbl 0058.25003Riordan, John 3 1954 Congruences for Eulerian numbers. Zbl 0051.27601Carlitz, Leonard; Riordan, John 7 1953 Analogue calculation of polynomial and trigonometric expansions. Zbl 0050.13305Scherberg, Max G.; Riordan, John F. 1 1953 A recurrence relation for three-line latin rectangles. Zbl 0046.00802Riordan, John 6 1952 Triangular permutation numbers. Zbl 0042.24803Riordan, John 5 1951 Inversion formulas in normal variable mapping. Zbl 0035.08101Riordan, John 2 1949 The arithmetic of Bell and Stirling numbers. Zbl 0036.02302Becker, H. W.; Riordan, John 16 1948 The problem of the rooks and its applications. Zbl 0060.02903Kaplansky, Irving; Riordan, John 38 1946 Derivatives of composite functions. Zbl 0063.06505Riordan, John 24 1946 The probleme des menages. Zbl 0060.02905Kaplansky, Irving; Riordan, John 8 1946 Three-line Latin rectangles. I, II. Zbl 0060.02807Riordan, John 7 1946 Permutations without 3-sequences. Zbl 0060.02902Riordan, John 15 1945 Multiple matching and runs by the symbolic method. Zbl 0063.03138Kaplansky, Irving; Riordan, John 3 1945 Moment recurrence relations for binomial, Poisson and hypergeometric frequency distributions. JFM 63.1084.04Riordan, J. 15 1937 Moment recurrence relations for binomial, Poisson and hypergeometric frequency distributions. Zbl 0017.17503Riordan, John 9 1937 Mutual impedance of grounded wires for horizontally stratified two-layer earth. Zbl 0006.38101Riordan, John; Sunde, Erling D. 4 1933 Transients in grounded wires lying on the earth’s surface. Zbl 0003.18802Riordan, John 1 1931 all cited Publications top 5 cited Publications all top 5 Cited by 1,929 Authors 30 Carlitz, Leonard 19 Chu, Wenchang 16 Kim, Taekyun 15 Chen, William Yong-Chuan 15 Kim, Dae San 14 Charalambides, Charalambos A. 14 Ricci, Paolo Emilio 14 Riordan, John F. 12 Mansour, Toufik 12 Srivastava, Hari Mohan 12 Stanley, Richard Peter 12 Stević, Stevo 11 Foata, Dominique C. 11 Natalini, Pierpaolo 11 Yan, Catherine Huafei 10 Jackson, David M. 9 Moon, John W. 9 Munagi, Augustine O. 9 Simsek, Yilmaz 9 Zeng, Jiang 8 Haglund, James 8 Ismail, Mourad El-Houssieny 8 Loehr, Nicholas A. 8 Munarini, Emanuele 8 Sprugnoli, Renzo 8 Stein, Paul R. 7 Donaghey, Robert 7 Flajolet, Philippe 7 Gessel, Ira Martin 7 Pittel, Boris G. 7 Prodinger, Helmut 7 Remmel, Jeffrey Brian 7 Shapiro, Louis W. 6 Francon, Jean 6 Konvalina, John 6 Liu, Guodong 6 Ma, Jun 6 Merca, Mircea 6 Merlini, Donatella 6 Rota, Gian-Carlo 6 Sagan, Bruce Eli 6 Tanny, Stephen M. 6 Yu, Changan 6 Zeilberger, Doron 5 Abate, Joseph 5 Butzer, Paul Leo 5 Farrell, Edward J. 5 Fu, James C. 5 Gould, Henry Wadsworth 5 Goulden, Ian P. 5 Han, Guo-Niu 5 Harary, Frank 5 Howard, Fredric T. 5 Kirschenhofer, Peter 5 Komatsu, Takao 5 Kyriakoussis, Andreas George 5 Ludkovsky, Sergey Victor 5 Makri, Frosso S. 5 Obaid, S. A. 5 Ramírez, José Luis 5 Roselle, David P. 5 Schlosser, Michael J. 5 Sloane, Neil James Alexander 5 Szpankowski, Wojciech 5 Takács, Lajos 5 Umar, Abdullahi 5 Vignat, Christophe 5 Whitt, Ward 5 Yeh, Yeong-Nan 4 Balakrishnan, Narayanaswamy 4 Cheng, Eddie 4 Cherruault, Yves 4 Corcino, Roberto Bagsarsa 4 Cvijović, Djurdje 4 D’Antona, Ottavio M. 4 Dehesa, Jesús S. 4 Diaconis, Persi Warren 4 Ding, Kequan 4 Dumont, Dominique 4 Ehrenborg, Richard 4 Frank, Ove 4 Good, Irving John (Jack) 4 Guo, Victor J. W. 4 Iričanin, Bratislav D. 4 Kim, Dojin 4 Kim, Ik-Pyo 4 Konvalinka, Matjaž 4 Krattenthaler, Christian Friedrich 4 Laradji, Abdallah 4 Lin, Zhicong 4 Ma, Shi-Mei 4 Malinovskiĭ, Vsevolod Konstantinovich 4 Meir, Amram 4 Milne, Stephen C. 4 Morales, Alejandro Henry 4 Mutafchiev, Lyuben R. 4 Odlyzko, Andrew M. 4 Philippou, Andreas N. 4 Pourbabai, Behnam 4 Qiu, Ke ...and 1,829 more Authors all top 5 Cited in 386 Serials 173 Discrete Mathematics 126 Journal of Combinatorial Theory. Series A 52 Advances in Applied Mathematics 45 European Journal of Combinatorics 30 Journal of Mathematical Analysis and Applications 30 Linear Algebra and its Applications 25 Mathematical Notes 24 Communications in Statistics. Theory and Methods 23 Proceedings of the American Mathematical Society 23 Transactions of the American Mathematical Society 23 The Electronic Journal of Combinatorics 20 Discrete Applied Mathematics 20 Advances in Mathematics 19 Journal of Statistical Planning and Inference 19 Theoretical Computer Science 18 Journal of Computational and Applied Mathematics 17 Annals of the Institute of Statistical Mathematics 17 Journal of Algebra 17 Advances in Difference Equations 16 Journal of Number Theory 15 Journal of Integer Sequences 14 Queueing Systems 14 Aequationes Mathematicae 14 The Ramanujan Journal 13 Mathematics of Computation 13 Journal of Approximation Theory 13 Statistics & Probability Letters 12 Journal of Combinatorial Theory. Series B 12 Annals of Combinatorics 11 Applied Mathematics and Computation 11 Monatshefte für Mathematik 11 Graphs and Combinatorics 10 Mathematical Proceedings of the Cambridge Philosophical Society 10 Mathematische Nachrichten 10 Studies in Applied Mathematics 10 Journal of Mathematical Sciences (New York) 9 Computers & Mathematics with Applications 9 Information Processing Letters 9 Linear and Multilinear Algebra 9 Mathematical and Computer Modelling 9 Methodology and Computing in Applied Probability 8 Journal of Mathematical Physics 8 Periodica Mathematica Hungarica 8 Random Structures & Algorithms 8 Discrete Mathematics and Applications 8 European Journal of Operational Research 8 Integral Transforms and Special Functions 8 Journal of the Australian Mathematical Society 7 Journal of the Franklin Institute 7 Journal of Statistical Physics 7 Metrika 7 Rocky Mountain Journal of Mathematics 7 Ukrainian Mathematical Journal 7 Insurance Mathematics & Economics 7 Applied Mathematics Letters 7 International Journal of Computer Mathematics 7 Journal of Algebraic Combinatorics 7 International Journal of Number Theory 6 International Journal of Mathematical Education in Science and Technology 6 Mathematische Zeitschrift 6 Quaestiones Mathematicae 6 Operations Research Letters 6 Order 6 Wuhan University Journal of Natural Sciences (WUJNS) 6 Integers 6 Applicable Analysis and Discrete Mathematics 5 Communications in Algebra 5 The Mathematical Intelligencer 5 Archiv der Mathematik 5 Mathematische Annalen 5 Results in Mathematics 5 Siberian Mathematical Journal 5 Zeitschrift für Wahrscheinlichkeitstheorie und Verwandte Gebiete 5 SIAM Journal on Algebraic and Discrete Methods 5 Combinatorica 5 Constructive Approximation 5 The Annals of Applied Probability 5 The Australasian Journal of Combinatorics 5 Journal of Inequalities and Applications 5 Journal of High Energy Physics 5 Bulletin of the American Mathematical Society 5 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 4 Bulletin of the Australian Mathematical Society 4 Communications in Mathematical Physics 4 Israel Journal of Mathematics 4 Problems of Information Transmission 4 Theoretical and Mathematical Physics 4 The Annals of Probability 4 Calcolo 4 Computing 4 Journal of Applied Probability 4 Journal of Graph Theory 4 Journal of Pure and Applied Algebra 4 Rendiconti del Circolo Matemàtico di Palermo. Serie II 4 Rendiconti del Seminario Matematico della Università di Padova 4 Acta Mathematica Hungarica 4 Journal of Symbolic Computation 4 Stochastic Processes and their Applications 4 Comptes Rendus. Mathématique. Académie des Sciences, Paris 4 BIT. Nordisk Tidskrift for Informationsbehandling ...and 286 more Serials all top 5 Cited in 60 Fields 939 Combinatorics (05-XX) 405 Number theory (11-XX) 248 Probability theory and stochastic processes (60-XX) 161 Special functions (33-XX) 112 Statistics (62-XX) 101 Computer science (68-XX) 81 Linear and multilinear algebra; matrix theory (15-XX) 76 Group theory and generalizations (20-XX) 74 Numerical analysis (65-XX) 71 Operations research, mathematical programming (90-XX) 55 Approximations and expansions (41-XX) 40 Order, lattices, ordered algebraic structures (06-XX) 33 Difference and functional equations (39-XX) 32 Quantum theory (81-XX) 30 Functions of a complex variable (30-XX) 30 Information and communication theory, circuits (94-XX) 29 Commutative algebra (13-XX) 29 Convex and discrete geometry (52-XX) 28 Ordinary differential equations (34-XX) 28 Harmonic analysis on Euclidean spaces (42-XX) 27 Real functions (26-XX) 26 Biology and other natural sciences (92-XX) 23 Algebraic geometry (14-XX) 23 Statistical mechanics, structure of matter (82-XX) 23 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 21 Associative rings and algebras (16-XX) 21 Partial differential equations (35-XX) 19 Operator theory (47-XX) 18 Dynamical systems and ergodic theory (37-XX) 15 Integral transforms, operational calculus (44-XX) 14 Mathematical logic and foundations (03-XX) 14 Field theory and polynomials (12-XX) 12 Nonassociative rings and algebras (17-XX) 12 Functional analysis (46-XX) 11 Sequences, series, summability (40-XX) 10 Geometry (51-XX) 9 Manifolds and cell complexes (57-XX) 8 Integral equations (45-XX) 8 Global analysis, analysis on manifolds (58-XX) 8 Systems theory; control (93-XX) 7 History and biography (01-XX) 7 Topological groups, Lie groups (22-XX) 7 Several complex variables and analytic spaces (32-XX) 7 General topology (54-XX) 6 Fluid mechanics (76-XX) 6 Relativity and gravitational theory (83-XX) 4 General algebraic systems (08-XX) 4 Category theory; homological algebra (18-XX) 4 Algebraic topology (55-XX) 4 Mechanics of deformable solids (74-XX) 4 Mathematics education (97-XX) 3 Measure and integration (28-XX) 3 Abstract harmonic analysis (43-XX) 3 Differential geometry (53-XX) 2 General and overarching topics; collections (00-XX) 2 Mechanics of particles and systems (70-XX) 2 Optics, electromagnetic theory (78-XX) 2 Classical thermodynamics, heat transfer (80-XX) 2 Astronomy and astrophysics (85-XX) 1 Calculus of variations and optimal control; optimization (49-XX) Citations by Year Wikidata Timeline The data are displayed as stored in Wikidata under a Creative Commons CC0 License. Updates and corrections should be made in Wikidata.