Edit Profile (opens in new tab) Kuhn, Harold William Compute Distance To: Compute Author ID: kuhn.harold-w Published as: Kuhn, H. W.; Kuhn, Harold W.; Kuhn, Harold William; Kuhn, Harold more...less External Links: MGP · Wikidata · GND · IdRef Documents Indexed: 54 Publications since 1950, including 3 Books 10 Contributions as Editor · 4 Further Contributions Biographic References: 1 Publication Co-Authors: 29 Co-Authors with 25 Joint Publications 577 Co-Co-Authors all top 5 Co-Authors 40 single-authored 10 Tucker, Albert William 4 Gale, David 4 Nash, John Forbes jun. 2 Hammerstein, Peter 2 Harsanyi, John Charles 2 Hoffman, Alan J. 2 Nirenberg, Louis 2 Quandt, Richard E. 2 Sarnak, Peter Clive 2 Selten, Reinhard 2 Szegö, Giorgio 2 van Damme, Eric 2 von Neumann, John 2 Weibull, Jörgen W. 2 Weisfeld, Morris 1 Baumol, William J. 1 Bohnenblust, H. Frederic 1 Bradt, Russell N. 1 Brown, George W. 1 Capel, C. E. 1 Davis, Robert Lloyd 1 Dresher, Melvin 1 Duren, William L. jun. 1 Fernandez, James W. 1 Grünbaum, Branko 1 Hart, Oliver D. 1 Johnsen, Peter D. jun. 1 Jones, Burton W. 1 Karlin, Samuel 1 Kemeny, John George 1 MacKinnon, James G. 1 McKinsey, J. C. C. 1 McShane, Edward James 1 Morgenstern, Oskar 1 Nasar, Sylvia 1 Price, Griffith Baley 1 Putman, A. L. 1 Rubinstein, Ariel 1 Shapley, Lloyd S. 1 Sherman, Seymour 1 Snow, R. N. 1 Soifer, Alexander 1 von Dalen, Dirk 1 Wang, Zeke 1 Weyl, Hermann 1 Xu, Senlin all top 5 Serials 6 Annals of Mathematics Studies 4 Duke Mathematical Journal 3 Proceedings of the National Academy of Sciences of the United States of America 2 American Mathematical Monthly 2 Mathematical Programming 2 Operations Research 1 Journal of Economic Theory 1 Journal of Mathematical Economics 1 Journal of Optimization Theory and Applications 1 Mathematica Scandinavica 1 Naval Research Logistics 1 Proceedings of the American Mathematical Society 1 European Journal of Operational Research 1 IBM Journal of Research and Development 1 Annals of Mathematics. Second Series 1 Bulletin of the American Mathematical Society 1 Naval Research Logistics Quarterly 1 Journal of Mathematics and Physics 1 Lecture Notes in Operations Research and Mathematical Economics all top 5 Fields 19 Operations research, mathematical programming (90-XX) 18 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 11 History and biography (01-XX) 8 General and overarching topics; collections (00-XX) 7 Numerical analysis (65-XX) 3 Functions of a complex variable (30-XX) 3 General topology (54-XX) 1 Linear and multilinear algebra; matrix theory (15-XX) 1 Operator theory (47-XX) 1 Calculus of variations and optimal control; optimization (49-XX) 1 Computer science (68-XX) 1 Systems theory; control (93-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 54 Publications have been cited 1,417 times in 1,299 Documents Cited by ▼ Year ▼ The Hungarian method for the assignment problem. Zbl 0143.41905Kuhn, H. W. 347 1955 Nonlinear programming. Zbl 0044.05903Kuhn, H. W.; Tucker, A. W. 263 1951 Extensive games and the problem of information. Zbl 0050.14303Kuhn, H. W. 106 1953 A note on Fermat’s problem. Zbl 0255.90063Kuhn, Harold W. 96 1973 Simplicial approximation of fixed points. Zbl 0191.54904Kuhn, Harold W. 53 1968 Some combinatorial lemmas in topology. Zbl 0109.15603Kuhn, H. W. 51 1960 Linear inequalities and related systems. Zbl 0072.37502 42 1956 An algorithm for equilibrium points in bimatrix games. Zbl 0171.40902Kuhn, H. W. 37 1961 On a pair of dual nonlinear programs. Zbl 0183.22804Kuhn, H. W. 37 1967 Extensive games. Zbl 0039.13402Kuhn, H. W. 29 1950 Extensive games and the problem of information. Zbl 0189.20204Kuhn, H. W. 27 1967 Solvability and consistency for linear equations and inequalities. Zbl 0070.25001Kuhn, H. W. 26 1956 Sandwich method for finding fixed points. Zbl 0299.65030Kuhn, H. W.; MacKinnon, J. G. 21 1975 Linear programming and the theory of games. Zbl 0045.09709Gale, David; Kuhn, Harold W.; Tucker, Albert W. 21 1951 An approximative algorithm for the fixed-charges transportation problem. Zbl 0109.13903Kuhn, H. W.; Baumol, W. J. 20 1962 Variants of the Hungarian method for assignment problems. Zbl 0143.42001Kuhn, H. W. 20 1956 On symmetric games. Zbl 0041.25503Gale, D.; Kuhn, H. W.; Tucker, A. W. 17 1950 An experimental study of the simplex method. Zbl 0127.08203Kuhn, Harold W.; Quandt, Richard E. 16 1963 Systems of distinct representatives and linear programming. Zbl 0071.01301Hoffman, A. J.; Kuhn, H. W. 13 1956 Classics in game theory. Zbl 1093.91500 12 1997 A proof of the existence of equilibrium without the free disposal assumption. Zbl 0317.90004Hart, Oliver D.; Kuhn, Harold W. 11 1975 Contributions to the theory of games. Zbl 0041.25302 10 1950 Statement for Naval Research Logistics“The Hungarian method for the assignment problem”. Reprint. Zbl 1154.90301Kuhn, Harold W. 9 2005 Nonlinear programming: A historical view. Zbl 0344.90029Kuhn, Harold W. 9 1976 “Steiner’s” problem revisited. Zbl 0347.90054Kuhn, Harold W. 9 1974 On the cost of computing roots of polynomials. Zbl 0542.65025Kuhn, Harold W.; Wang, Zeke; Xu, Senlin 9 1984 A new proof of the fundamental theorem of algebra. Zbl 0364.30003Kuhn, H. W. 8 1974 Differential games and related topics. Zbl 0211.00103 8 1971 A simplified two-person poker. Zbl 0041.25601Kuhn, H. W. 8 1950 John von Neumann’s Work in the theory of games and mathematical economics. Zbl 0080.00417Kuhn, H. W.; Tucker, A. W. 7 1958 Some remarks on games of fair division. Zbl 0214.19103Kuhn, H. W. 7 1967 Subgroup theorems for groups presented by generators and relations. Zbl 0047.02303Kuhn, H. W. 7 1952 On systems of distinct representatives. Zbl 0072.37704Hoffman, A. J.; Kuhn, H. W. 6 1956 On upper bounds for the number of iterations in solving linear programs. Zbl 0123.37204Quandt, Richard E.; Kuhn, Harold W. 6 1964 Reductions of game matrices. Zbl 0041.25504Gale, D.; Kuhn, H. W.; Tucker, A. W. 6 1950 The work of John Nash in game theory. Nobel seminar, December 8, 1994. Zbl 0853.90146Kuhn, Harold W.; Harsanyi, John C.; Selten, Reinhard; Weibull, Jörgen W.; Van Damme, Eric; Nash, John F. jun.; Hammerstein, Peter 4 1996 Contributions to the theory of games. Vol. II. Zbl 1341.91006Kuhn, Harold William 4 1953 Linear inequalities and related systems. Zbl 0103.13003 4 1959 Approximate search for fixed points. Zbl 0195.49402Kuhn, Harold W. 4 1969 Being in the right place at the right time. Zbl 1163.90302Kuhn, Harold W. 3 2002 The Hungarian method for the assignment problem. Zbl 1187.90015Kuhn, Harold W. 3 2010 Contractibility and convexity. Zbl 0057.14501Kuhn, H. W. 3 1954 Lectures on the theory of games. Zbl 1027.91002Kuhn, Harold W. 2 2003 Theory of games and economic behavior. With an introduction by Harold Kuhn and an afterword by Ariel Rubinstein. Sixtieth-anniversary ed. Zbl 1109.91001von Neumann, John; Morgenstern, Oskar 2 2004 Finding roots of polynomials by pivoting. Zbl 0431.65032Kuhn, Harold W. 2 1977 A note on “the law of supply and demand”. Zbl 0070.15603Kuhn, H. W. 2 1956 On a theorem of Wald. Zbl 0072.37901Kuhn, H. W. 2 1956 A tale of three eras: the discovery and rediscovery of the Hungarian method. Zbl 1253.90004Kuhn, Harold W. 2 2012 Locational problems and mathematical programming. Zbl 0143.21604Kuhn, H. W. 2 1965 Lectures on mathematical economics. Zbl 0212.23702Kuhn, H. W. 2 1968 Proceedings of the Princeton symposium on mathematical programming. Held at Princeton University, Princeton, N.J., August 14–18, 1967. Zbl 0215.31403 2 1970 The work of John F. Nash Jr. in game theory. Nobel seminar, 8 December 1994. Zbl 0849.01037 1 1995 Mathematical systems theory and economics I, II. Proceedings of an international summer school held in Varenna, Italy, June 1–12, 1967. Zbl 0176.26901 1 1969 How to compute economic equilibria by pivotal methods. Zbl 0604.90027Kuhn, Harold W. 1 1986 A tale of three eras: the discovery and rediscovery of the Hungarian method. Zbl 1253.90004Kuhn, Harold W. 2 2012 The Hungarian method for the assignment problem. Zbl 1187.90015Kuhn, Harold W. 3 2010 Statement for Naval Research Logistics“The Hungarian method for the assignment problem”. Reprint. Zbl 1154.90301Kuhn, Harold W. 9 2005 Theory of games and economic behavior. With an introduction by Harold Kuhn and an afterword by Ariel Rubinstein. Sixtieth-anniversary ed. Zbl 1109.91001von Neumann, John; Morgenstern, Oskar 2 2004 Lectures on the theory of games. Zbl 1027.91002Kuhn, Harold W. 2 2003 Being in the right place at the right time. Zbl 1163.90302Kuhn, Harold W. 3 2002 Classics in game theory. Zbl 1093.91500 12 1997 The work of John Nash in game theory. Nobel seminar, December 8, 1994. Zbl 0853.90146Kuhn, Harold W.; Harsanyi, John C.; Selten, Reinhard; Weibull, Jörgen W.; Van Damme, Eric; Nash, John F. jun.; Hammerstein, Peter 4 1996 The work of John F. Nash Jr. in game theory. Nobel seminar, 8 December 1994. Zbl 0849.01037 1 1995 How to compute economic equilibria by pivotal methods. Zbl 0604.90027Kuhn, Harold W. 1 1986 On the cost of computing roots of polynomials. Zbl 0542.65025Kuhn, Harold W.; Wang, Zeke; Xu, Senlin 9 1984 Finding roots of polynomials by pivoting. Zbl 0431.65032Kuhn, Harold W. 2 1977 Nonlinear programming: A historical view. Zbl 0344.90029Kuhn, Harold W. 9 1976 Sandwich method for finding fixed points. Zbl 0299.65030Kuhn, H. W.; MacKinnon, J. G. 21 1975 A proof of the existence of equilibrium without the free disposal assumption. Zbl 0317.90004Hart, Oliver D.; Kuhn, Harold W. 11 1975 “Steiner’s” problem revisited. Zbl 0347.90054Kuhn, Harold W. 9 1974 A new proof of the fundamental theorem of algebra. Zbl 0364.30003Kuhn, H. W. 8 1974 A note on Fermat’s problem. Zbl 0255.90063Kuhn, Harold W. 96 1973 Differential games and related topics. Zbl 0211.00103 8 1971 Proceedings of the Princeton symposium on mathematical programming. Held at Princeton University, Princeton, N.J., August 14–18, 1967. Zbl 0215.31403 2 1970 Approximate search for fixed points. Zbl 0195.49402Kuhn, Harold W. 4 1969 Mathematical systems theory and economics I, II. Proceedings of an international summer school held in Varenna, Italy, June 1–12, 1967. Zbl 0176.26901 1 1969 Simplicial approximation of fixed points. Zbl 0191.54904Kuhn, Harold W. 53 1968 Lectures on mathematical economics. Zbl 0212.23702Kuhn, H. W. 2 1968 On a pair of dual nonlinear programs. Zbl 0183.22804Kuhn, H. W. 37 1967 Extensive games and the problem of information. Zbl 0189.20204Kuhn, H. W. 27 1967 Some remarks on games of fair division. Zbl 0214.19103Kuhn, H. W. 7 1967 Locational problems and mathematical programming. Zbl 0143.21604Kuhn, H. W. 2 1965 On upper bounds for the number of iterations in solving linear programs. Zbl 0123.37204Quandt, Richard E.; Kuhn, Harold W. 6 1964 An experimental study of the simplex method. Zbl 0127.08203Kuhn, Harold W.; Quandt, Richard E. 16 1963 An approximative algorithm for the fixed-charges transportation problem. Zbl 0109.13903Kuhn, H. W.; Baumol, W. J. 20 1962 An algorithm for equilibrium points in bimatrix games. Zbl 0171.40902Kuhn, H. W. 37 1961 Some combinatorial lemmas in topology. Zbl 0109.15603Kuhn, H. W. 51 1960 Linear inequalities and related systems. Zbl 0103.13003 4 1959 John von Neumann’s Work in the theory of games and mathematical economics. Zbl 0080.00417Kuhn, H. W.; Tucker, A. W. 7 1958 Linear inequalities and related systems. Zbl 0072.37502 42 1956 Solvability and consistency for linear equations and inequalities. Zbl 0070.25001Kuhn, H. W. 26 1956 Variants of the Hungarian method for assignment problems. Zbl 0143.42001Kuhn, H. W. 20 1956 Systems of distinct representatives and linear programming. Zbl 0071.01301Hoffman, A. J.; Kuhn, H. W. 13 1956 On systems of distinct representatives. Zbl 0072.37704Hoffman, A. J.; Kuhn, H. W. 6 1956 A note on “the law of supply and demand”. Zbl 0070.15603Kuhn, H. W. 2 1956 On a theorem of Wald. Zbl 0072.37901Kuhn, H. W. 2 1956 The Hungarian method for the assignment problem. Zbl 0143.41905Kuhn, H. W. 347 1955 Contractibility and convexity. Zbl 0057.14501Kuhn, H. W. 3 1954 Extensive games and the problem of information. Zbl 0050.14303Kuhn, H. W. 106 1953 Contributions to the theory of games. Vol. II. Zbl 1341.91006Kuhn, Harold William 4 1953 Subgroup theorems for groups presented by generators and relations. Zbl 0047.02303Kuhn, H. W. 7 1952 Nonlinear programming. Zbl 0044.05903Kuhn, H. W.; Tucker, A. W. 263 1951 Linear programming and the theory of games. Zbl 0045.09709Gale, David; Kuhn, Harold W.; Tucker, Albert W. 21 1951 Extensive games. Zbl 0039.13402Kuhn, H. W. 29 1950 On symmetric games. Zbl 0041.25503Gale, D.; Kuhn, H. W.; Tucker, A. W. 17 1950 Contributions to the theory of games. Zbl 0041.25302 10 1950 A simplified two-person poker. Zbl 0041.25601Kuhn, H. W. 8 1950 Reductions of game matrices. Zbl 0041.25504Gale, D.; Kuhn, H. W.; Tucker, A. W. 6 1950 all cited Publications top 5 cited Publications all top 5 Cited by 2,092 Authors 12 Ben-Israel, Adi 9 Pardalos, Panos M. 8 Alós-Ferrer, Carlos 8 Battigalli, Pierpaolo 8 Ritzberger, Klaus 8 Van der Laan, Gerard 7 Boros, Endre 7 Eaves, B. Curtis 6 Gould, Floyd J. 6 Gurvich, Vladimir A. 6 Love, Robert F. 6 Marchi, Ezio 6 Talman, Adolphus J. J. 5 Bertsekas, Dimitri Panteli 5 Brimberg, Jack 5 Fishburn, Peter Clingerman 5 Plastria, Frank 5 Tijs, Stef H. 4 Andersson, Tommy 4 Aumann, Robert John 4 Barzily, Zeev 4 Benson, Harold P. 4 Cottle, Richard W. 4 Dantzig, George Bernard 4 Derigs, Ulrich 4 Francis, Richard L. 4 Haimes, Yacov Y. 4 Hanson, Morgan A. 4 Iyigun, Cem 4 Jansen, M. J. M. 4 Jiang, Jianlin 4 Katz, I. Norman 4 Kline, Jeffrey Jude 4 Koller, Daphne 4 Kuhn, Harold William 4 Liaw, Ching-Fang 4 Mangasarian, Olvi L. 4 Mirsky, Leon 4 Selten, Reinhard 4 Sengupta, Jati K. 4 Volkovich, Vladimir E. 4 Yang, Zaifu 4 Zwicker, William S. 3 Bazaraa, Mokhtar S. 3 Ben-Tal, Aharon 3 Borm, Peter E. M. 3 Boysen, Nils 3 Brualdi, Richard Anthony 3 Bunke, Horst 3 Charnes, Abraham 3 Chen, Reuven 3 Dahiya, Kalpana 3 Dang, Chuangyin 3 de la Puente, Maria Jesus 3 Drezner, Zvi 3 Durier, Roland 3 Edmonds, Jack R. 3 Eiselt, Horst A. 3 Ginchev, Ivan G. 3 Goldfarb, Donald 3 Goode, Jamie J. 3 Guerraggio, Angelo 3 Henig, Mordechai I. 3 Hoffman, Alan J. 3 Igarashi, Ayumi 3 Kalai, Ehud 3 Kashyap, Rangasami L. 3 Kaul, R. N. 3 Kjeldsen, Tinne Hoff 3 Kojima, Masakazu 3 Lim, Andrew E. B. 3 Maenhout, Broos 3 Maier, Giulio 3 Makino, Kazuhisa 3 Martello, Silvano 3 Megiddo, Nimrod 3 Meunier, Frédéric 3 Michelot, Christian 3 Min, Chohong 3 Mond, Bertram 3 Nam, Nguyen Mau 3 Nishizaki, Ichiro 3 Petrosyan, Leon Aganesovich 3 Potters, Jos A. M. 3 Puri, Munish C. 3 Quintas, Luis Guillermo 3 Rauch Henzinger, Monika 3 Renegar, James 3 Rodríguez, Margarita M. L. 3 Schaffer, Jonathan 3 Shabtay, Dvir 3 Sharma, Anuj Kumar 3 Solow, Daniel 3 Stein, Oliver 3 Talman, Dolf 3 Tammer, Christiane 3 Tolle, Jon W. 3 Valkonen, Tuomo 3 Verma, Vanita 3 Volgenant, Anton ...and 1,992 more Authors all top 5 Cited in 290 Serials 106 European Journal of Operational Research 66 Mathematical Programming 50 Journal of Mathematical Analysis and Applications 48 Journal of Optimization Theory and Applications 48 Games and Economic Behavior 41 Computers & Operations Research 27 Journal of Economic Theory 24 Discrete Applied Mathematics 23 International Journal of Game Theory 22 Linear Algebra and its Applications 20 Annals of Operations Research 19 Journal of Mathematical Economics 18 Operations Research Letters 18 Pattern Recognition 18 Mathematical Programming. Series A. Series B 16 Theoretical Computer Science 15 Artificial Intelligence 15 Computers & Mathematics with Applications 15 Applied Mathematics and Computation 15 Automatica 14 Mathematical Social Sciences 13 Economic Theory 12 Optimization 12 Journal of Global Optimization 11 Discrete Mathematics 11 Computing 11 Unternehmensforschung 10 Journal of Computer and System Sciences 9 Computer Methods in Applied Mechanics and Engineering 9 Information Sciences 9 Computational Optimization and Applications 9 Journal of Combinatorial Optimization 8 Fuzzy Sets and Systems 8 Journal of Combinatorial Theory. Series A 8 Proceedings of the American Mathematical Society 8 Algorithmica 8 Economics Letters 8 Bulletin of the American Mathematical Society 7 Journal of Computational Physics 7 Theory and Decision 7 Transactions of the American Mathematical Society 7 Machine Learning 7 Naval Research Logistics Quarterly 7 Optimization Letters 6 Journal of Computational and Applied Mathematics 6 Trabajos de Estadistica y de Investigacion Operativa 5 Kybernetika 5 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 5 Information and Computation 5 Applied Mathematical Modelling 4 Information Processing Letters 4 Israel Journal of Mathematics 4 Numerical Functional Analysis and Optimization 4 OR Spektrum 4 Applied Mathematics Letters 4 Mathematical and Computer Modelling 4 Journal of Mathematical Imaging and Vision 4 International Journal of Computer Vision 4 Annals of Mathematics and Artificial Intelligence 4 Mathematical Problems in Engineering 4 RAIRO. Operations Research 4 International Game Theory Review 4 Discrete Optimization 3 International Journal of General Systems 3 International Journal of Systems Science 3 Mathematics of Computation 3 Journal of Combinatorial Theory. Series B 3 Journal of Econometrics 3 Journal of Mathematical Psychology 3 Journal of Statistical Planning and Inference 3 Mathematische Annalen 3 Mathematics and Computers in Simulation 3 Mathematika 3 Meccanica 3 Numerische Mathematik 3 Studia Logica 3 Synthese 3 Journal of Classification 3 Acta Mathematicae Applicatae Sinica. English Series 3 Graphs and Combinatorics 3 International Journal of Approximate Reasoning 3 Automation and Remote Control 3 Historia Mathematica 3 Zeitschrift für Operations Research. Serie A: Theorie 3 Zeitschrift für Operations Research. Serie B: Praxis 3 Computational Statistics and Data Analysis 3 ZOR. Zeitschrift für Operations Research 3 Cybernetics and Systems Analysis 3 Top 3 Mathematical Methods of Operations Research 3 Journal of Systems Science and Complexity 3 Games 3 Statistics and Computing 3 Nonlinear Analysis. Theory, Methods & Applications 2 International Journal of Mathematical Education in Science and Technology 2 International Journal of Solids and Structures 2 Mathematical Biosciences 2 Metrika 2 Physica A 2 The Mathematical Intelligencer ...and 190 more Serials all top 5 Cited in 50 Fields 650 Operations research, mathematical programming (90-XX) 336 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 176 Computer science (68-XX) 169 Numerical analysis (65-XX) 93 Combinatorics (05-XX) 67 Statistics (62-XX) 66 Calculus of variations and optimal control; optimization (49-XX) 36 Convex and discrete geometry (52-XX) 31 Linear and multilinear algebra; matrix theory (15-XX) 29 Systems theory; control (93-XX) 24 History and biography (01-XX) 23 Information and communication theory, circuits (94-XX) 21 Biology and other natural sciences (92-XX) 19 Algebraic topology (55-XX) 18 General topology (54-XX) 17 Mathematical logic and foundations (03-XX) 17 Real functions (26-XX) 12 Probability theory and stochastic processes (60-XX) 12 Mechanics of deformable solids (74-XX) 9 Geometry (51-XX) 8 Ordinary differential equations (34-XX) 8 Approximations and expansions (41-XX) 8 Functional analysis (46-XX) 8 Manifolds and cell complexes (57-XX) 7 Order, lattices, ordered algebraic structures (06-XX) 7 Partial differential equations (35-XX) 7 Operator theory (47-XX) 6 Functions of a complex variable (30-XX) 5 General and overarching topics; collections (00-XX) 5 Field theory and polynomials (12-XX) 4 Algebraic geometry (14-XX) 4 Differential geometry (53-XX) 4 Fluid mechanics (76-XX) 3 Category theory; homological algebra (18-XX) 3 Dynamical systems and ergodic theory (37-XX) 3 Mechanics of particles and systems (70-XX) 3 Quantum theory (81-XX) 2 General algebraic systems (08-XX) 2 Number theory (11-XX) 2 Commutative algebra (13-XX) 2 Group theory and generalizations (20-XX) 2 Several complex variables and analytic spaces (32-XX) 2 Classical thermodynamics, heat transfer (80-XX) 2 Statistical mechanics, structure of matter (82-XX) 2 Mathematics education (97-XX) 1 Difference and functional equations (39-XX) 1 Integral equations (45-XX) 1 Global analysis, analysis on manifolds (58-XX) 1 Optics, electromagnetic theory (78-XX) 1 Geophysics (86-XX) Citations by Year Wikidata Timeline The data are displayed as stored in Wikidata under a Creative Commons CC0 License. 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