Edit Profile (opens in new tab) Šámal, Robert Co-Author Distance Author ID: samal.robert Published as: Šámal, Robert; Samal, Robert; Sámal, Robert; Šamal, Robert; Šámal, R. more...less Homepage: https://iuuk.mff.cuni.cz/~samal/ External Links: MGP · ORCID · Wikidata · Google Scholar · ResearchGate · GND · IdRef Documents Indexed: 64 Publications since 1999, including 1 Book and 10 Additional arXiv Preprints Reviewing Activity: 1 Review Co-Authors: 67 Co-Authors with 56 Joint Publications 2,110 Co-Co-Authors all top 5 Co-Authors 8 single-authored 15 Mohar, Bojan 14 DeVos, Matthew 7 Roberson, David E. 6 Varvitsiotis, Antonios E. 5 Godsil, Christopher David 5 Opěla, David 5 Pyrih, Pavel 4 Dvořák, Zdeněk 4 Hušek, Radek 4 Král’, Daniel 4 Rooney, Brendan 3 Bárta, Tomáš 3 Matoušek, Jiří 3 Nešetřil, Jaroslav 3 Podbrdský, Pavel 3 Rollová, Edita 3 Severini, Simone 2 Goddyn, Luis A. 2 Halasz, Kevin 2 Loth, Jesse Campion 2 Mančinska, Laura 2 Masařík, Tomáš 2 Maxová, Jana 2 Růžička, Pavel 2 Valla, Tomáš 1 Aharoni, Ron 1 Atserias, Albert 1 Bang-Jensen, Jørgen 1 Cabello, Sergio 1 Černý, Jakub 1 Dvořák, Pavel 1 Feghali, Carl 1 Folwarczný, Lukáš 1 Georgakopoulos, Agelos 1 Ghanbari, Babak 1 González Hermosillo de la Maza, Sebastián 1 Hartman, David 1 Huynh, Tony 1 Jelínek, Vít 1 Kaiser, Tomáš 1 Kantor, Ida 1 Kára, Jan 1 Knox, Fiachra 1 Langhede, Rikke 1 Lidický, Bernard 1 McDonald, Jessica 1 Mohelníková, Lucie 1 Montejano, Amanda 1 Moore, Benjamin R. 1 Nejedlý, Pavel 1 Nurse, Kathryn 1 Opler, Michal 1 Pivotto, Irene 1 Pokorná, Aneta 1 Pudlák, Pavel 1 Reed, Bruce Alan 1 Schacht, Mathias 1 Seifrtová, Michaela 1 Sotáková, Miroslava 1 Stolař, Rudolf 1 Thomassen, Carsten 1 Toft, Bjarne 1 Valtr, Pavel 1 Vondrák, Jan 1 Vu, Tung Anh 1 Wagner, Uli 1 Wood, David Ronald all top 5 Serials 5 Journal of Combinatorial Theory. Series B 5 Journal of Graph Theory 5 European Journal of Combinatorics 4 The Electronic Journal of Combinatorics 3 Combinatorica 2 Discrete Mathematics 2 Questions and Answers in General Topology 2 Discrete & Computational Geometry 2 Southwest Journal of Pure and Applied Mathematics 1 Acta Arithmetica 1 Archivum Mathematicum 1 Commentationes Mathematicae Universitatis Carolinae 1 Proceedings of the American Mathematical Society 1 Theoretical Computer Science 1 Graphs and Combinatorics 1 SIAM Journal on Discrete Mathematics 1 Mathematica Pannonica 1 Mathematical Programming. Series A. Series B 1 Discrete Mathematics and Theoretical Computer Science. DMTCS 1 Student Mathematical Library 1 Advances in Combinatorics all top 5 Fields 50 Combinatorics (05-XX) 6 General topology (54-XX) 5 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 4 Operations research, mathematical programming (90-XX) 3 Computer science (68-XX) 2 Number theory (11-XX) 2 Convex and discrete geometry (52-XX) 1 General and overarching topics; collections (00-XX) 1 Algebraic geometry (14-XX) 1 Group theory and generalizations (20-XX) 1 Abstract harmonic analysis (43-XX) 1 Algebraic topology (55-XX) 1 Manifolds and cell complexes (57-XX) 1 Quantum theory (81-XX) 1 Biology and other natural sciences (92-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 40 Publications have been cited 209 times in 191 Documents Cited by ▼ Year ▼ Cayley sum graphs and eigenvalues of \((3,6)\)-fullerenes. Zbl 1217.05140 DeVos, Matt; Goddyn, Luis; Mohar, Bojan; Šámal, Robert 28 2009 Star chromatic index. Zbl 1262.05049 Dvořák, Zdeněk; Mohar, Bojan; Šámal, Robert 25 2013 Quantum and non-signalling graph isomorphisms. Zbl 1414.05197 Atserias, Albert; Mančinska, Laura; Roberson, David E.; Šámal, Robert; Severini, Simone; Varvitsiotis, Antonios 22 2019 Short cycle covers of graphs with minimum degree three. Zbl 1216.05048 Kaiser, Tomáš; Král’, Daniel; Lidický, Bernard; Nejedlý, Pavel; Šámal, Robert 14 2010 A rainbow version of Mantel’s theorem. Zbl 1450.05021 Aharoni, Ron; DeVos, Matt; González Hermosillo de la Maza, Sebastián; Montejano, Amanda; Šámal, Robert 14 2020 On six problems posed by Jarik Nešetřil. Zbl 1116.05081 Bang-Jensen, Jørgen; Reed, Bruce; Schacht, Mathias; Šámal, Robert; Toft, Bjarne; Wagner, Uli 11 2006 Sabidussi versus Hedetniemi for three variations of the chromatic number. Zbl 1389.05040 Godsil, Chris; Roberson, David E.; Šámal, Robert; Severini, Simone 10 2016 On tension-continuous mappings. Zbl 1183.05050 Nešetřil, Jaroslav; Šámal, Robert 8 2008 Tension continuous maps – their structure and applications. Zbl 1243.05228 Nešetřil, Jaroslav; Šámal, Robert 5 2012 New approach to Petersen coloring. Zbl 1274.05175 Šámal, Robert 5 2011 Graph homomorphisms via vector colorings. Zbl 1414.05199 Godsil, Chris; Roberson, David E.; Rooney, Brendan; Šámal, Robert; Varvitsiotis, Antonios 5 2019 Universal completability, least eigenvalue frameworks, and vector colorings. Zbl 1371.05162 Godsil, Chris; Roberson, David E.; Rooney, Brendan; Šámal, Robert; Varvitsiotis, Antonios 4 2017 Linear bound for majority colourings of digraphs. Zbl 1395.05070 Knox, Fiachra; Šámal, Robert 4 2018 Fractional covering by cuts. Zbl 1200.05165 Šámal, Robert 3 2005 A quadratic lower bound for subset sums. Zbl 1133.11016 DeVos, Matt; Goddyn, Luis; Mohar, Bojan; Šámal, Robert 3 2007 Hamilton cycles in strong products of graphs. Zbl 1062.05087 Král’, Daniel; Maxová, Jana; Šámal, Robert; Podbrdský, Pavel 3 2005 Pancyclicity of strong products of graphs. Zbl 1055.05095 Král, Daniel; Maxová, Jana; Podbrdský, Pavel; Šámal, Robert 3 2004 Mathematics++. Selected topics beyond the basic courses. Zbl 1330.00003 Kantor, Ida; Matoušek, Jiří; Šámal, Robert 3 2015 Highly arc-transitive digraphs – structure and counterexamples. Zbl 1389.05055 DeVos, Matt; Mohar, Bojan; Samal, Robert 3 2015 Cycle-continuous mappings – order structure. Zbl 1365.05154 Šámal, Robert 3 2017 Graph cores via universal completability. Zbl 1346.05195 Godsil, Chris; Roberson, David; Rooney, Brendan; Šámal, Robert; Varvitsiotis, Antonios 3 2015 Group connectivity: \(\mathbb{Z}_4\) vs \(\mathbb{Z}_2^2\). Zbl 1495.05117 Hušek, Radek; Mohelníková, Lucie; Šámal, Robert 3 2020 The guarding game is E-complete. Zbl 1307.91043 Šámal, R.; Valla, T. 3 2014 Unexpected behaviour of crossing sequences. Zbl 1234.05065 DeVos, Matt; Mohar, Bojan; Šámal, Robert 2 2011 Complexity of the cop and robber guarding game. Zbl 1344.05098 Šámal, Robert; Stolař, Rudolf; Valla, Tomas 2 2011 Induced trees in triangle-free graphs. Zbl 1159.05035 Matousek, Jirí; Sámal, Robert 2 2008 Unexpected behaviour of crossing sequences. Zbl 1267.05080 DeVos, Matt; Mohar, Bojan; Šámal, Robert 2 2008 Exponentially many nowhere-zero \(\mathbb{Z}_3\)-, \(\mathbb{Z}_4\)-, and \(\mathbb{Z}_6\)-flows. Zbl 1449.05126 Dvořák, Zdeněk; Mohar, Bojan; Šámal, Robert 2 2019 Relaxations of graph isomorphism. Zbl 1441.68190 Mančinska, Laura; Roberson, David E.; Šamal, Robert; Severini, Simone; Varvitsiotis, Antonios 2 2017 Random 2-cell embeddings of multistars. Zbl 1492.05144 Loth, Jesse Campion; Halasz, Kevin; Masařík, Tomáš; Mohar, Bojan; Šámal, Robert 2 2022 Induced trees in triangle-free graphs. Zbl 1341.05026 Matoušek, Jiří; Šámal, Robert 1 2007 High-girth cubic graphs are homomorphic to the Clebsch graph. Zbl 1231.05093 DeVos, Matt; Šámal, Robert 1 2011 Antisymmetric flows and strong oriented coloring of planar graphs. Zbl 1029.05054 Šámal, Robert 1 2003 On the number of intersections of two polygons. Zbl 1099.52004 Černý, Jakub; Kára, Jan; Král’, Daniel; Podbrdský, Pavel; Sotáková, Miroslava; Šámal, Robert 1 2003 Cubical coloring – fractional covering by cuts and semidefinite programming. Zbl 1327.05123 Šámal, Robert 1 2015 A new proof of Seymour’s 6-flow theorem. Zbl 1350.05053 DeVos, Matt; Rollová, Edita; Šámal, Robert 1 2017 3-flows with large support. Zbl 1443.05082 DeVos, Matt; McDonald, Jessica; Pivotto, Irene; Rollová, Edita; Šámal, Robert 1 2020 Cycle-continuous mappings – order structure. Zbl 1291.05135 Šámal, Robert 1 2013 An Eberhard-like theorem for pentagons and heptagons. Zbl 1237.52011 DeVos, Matt; Georgakopoulos, Agelos; Mohar, Bojan; Šámal, Robert 1 2010 Vector coloring the categorical product of graphs. Zbl 1442.05056 Godsil, Chris; Roberson, David E.; Rooney, Brendan; Šámal, Robert; Varvitsiotis, Antonios 1 2020 Random 2-cell embeddings of multistars. Zbl 1492.05144 Loth, Jesse Campion; Halasz, Kevin; Masařík, Tomáš; Mohar, Bojan; Šámal, Robert 2 2022 A rainbow version of Mantel’s theorem. Zbl 1450.05021 Aharoni, Ron; DeVos, Matt; González Hermosillo de la Maza, Sebastián; Montejano, Amanda; Šámal, Robert 14 2020 Group connectivity: \(\mathbb{Z}_4\) vs \(\mathbb{Z}_2^2\). Zbl 1495.05117 Hušek, Radek; Mohelníková, Lucie; Šámal, Robert 3 2020 3-flows with large support. Zbl 1443.05082 DeVos, Matt; McDonald, Jessica; Pivotto, Irene; Rollová, Edita; Šámal, Robert 1 2020 Vector coloring the categorical product of graphs. Zbl 1442.05056 Godsil, Chris; Roberson, David E.; Rooney, Brendan; Šámal, Robert; Varvitsiotis, Antonios 1 2020 Quantum and non-signalling graph isomorphisms. Zbl 1414.05197 Atserias, Albert; Mančinska, Laura; Roberson, David E.; Šámal, Robert; Severini, Simone; Varvitsiotis, Antonios 22 2019 Graph homomorphisms via vector colorings. Zbl 1414.05199 Godsil, Chris; Roberson, David E.; Rooney, Brendan; Šámal, Robert; Varvitsiotis, Antonios 5 2019 Exponentially many nowhere-zero \(\mathbb{Z}_3\)-, \(\mathbb{Z}_4\)-, and \(\mathbb{Z}_6\)-flows. Zbl 1449.05126 Dvořák, Zdeněk; Mohar, Bojan; Šámal, Robert 2 2019 Linear bound for majority colourings of digraphs. Zbl 1395.05070 Knox, Fiachra; Šámal, Robert 4 2018 Universal completability, least eigenvalue frameworks, and vector colorings. Zbl 1371.05162 Godsil, Chris; Roberson, David E.; Rooney, Brendan; Šámal, Robert; Varvitsiotis, Antonios 4 2017 Cycle-continuous mappings – order structure. Zbl 1365.05154 Šámal, Robert 3 2017 Relaxations of graph isomorphism. Zbl 1441.68190 Mančinska, Laura; Roberson, David E.; Šamal, Robert; Severini, Simone; Varvitsiotis, Antonios 2 2017 A new proof of Seymour’s 6-flow theorem. Zbl 1350.05053 DeVos, Matt; Rollová, Edita; Šámal, Robert 1 2017 Sabidussi versus Hedetniemi for three variations of the chromatic number. Zbl 1389.05040 Godsil, Chris; Roberson, David E.; Šámal, Robert; Severini, Simone 10 2016 Mathematics++. Selected topics beyond the basic courses. Zbl 1330.00003 Kantor, Ida; Matoušek, Jiří; Šámal, Robert 3 2015 Highly arc-transitive digraphs – structure and counterexamples. Zbl 1389.05055 DeVos, Matt; Mohar, Bojan; Samal, Robert 3 2015 Graph cores via universal completability. Zbl 1346.05195 Godsil, Chris; Roberson, David; Rooney, Brendan; Šámal, Robert; Varvitsiotis, Antonios 3 2015 Cubical coloring – fractional covering by cuts and semidefinite programming. Zbl 1327.05123 Šámal, Robert 1 2015 The guarding game is E-complete. Zbl 1307.91043 Šámal, R.; Valla, T. 3 2014 Star chromatic index. Zbl 1262.05049 Dvořák, Zdeněk; Mohar, Bojan; Šámal, Robert 25 2013 Cycle-continuous mappings – order structure. Zbl 1291.05135 Šámal, Robert 1 2013 Tension continuous maps – their structure and applications. Zbl 1243.05228 Nešetřil, Jaroslav; Šámal, Robert 5 2012 New approach to Petersen coloring. Zbl 1274.05175 Šámal, Robert 5 2011 Unexpected behaviour of crossing sequences. Zbl 1234.05065 DeVos, Matt; Mohar, Bojan; Šámal, Robert 2 2011 Complexity of the cop and robber guarding game. Zbl 1344.05098 Šámal, Robert; Stolař, Rudolf; Valla, Tomas 2 2011 High-girth cubic graphs are homomorphic to the Clebsch graph. Zbl 1231.05093 DeVos, Matt; Šámal, Robert 1 2011 Short cycle covers of graphs with minimum degree three. Zbl 1216.05048 Kaiser, Tomáš; Král’, Daniel; Lidický, Bernard; Nejedlý, Pavel; Šámal, Robert 14 2010 An Eberhard-like theorem for pentagons and heptagons. Zbl 1237.52011 DeVos, Matt; Georgakopoulos, Agelos; Mohar, Bojan; Šámal, Robert 1 2010 Cayley sum graphs and eigenvalues of \((3,6)\)-fullerenes. Zbl 1217.05140 DeVos, Matt; Goddyn, Luis; Mohar, Bojan; Šámal, Robert 28 2009 On tension-continuous mappings. Zbl 1183.05050 Nešetřil, Jaroslav; Šámal, Robert 8 2008 Induced trees in triangle-free graphs. Zbl 1159.05035 Matousek, Jirí; Sámal, Robert 2 2008 Unexpected behaviour of crossing sequences. Zbl 1267.05080 DeVos, Matt; Mohar, Bojan; Šámal, Robert 2 2008 A quadratic lower bound for subset sums. Zbl 1133.11016 DeVos, Matt; Goddyn, Luis; Mohar, Bojan; Šámal, Robert 3 2007 Induced trees in triangle-free graphs. Zbl 1341.05026 Matoušek, Jiří; Šámal, Robert 1 2007 On six problems posed by Jarik Nešetřil. Zbl 1116.05081 Bang-Jensen, Jørgen; Reed, Bruce; Schacht, Mathias; Šámal, Robert; Toft, Bjarne; Wagner, Uli 11 2006 Fractional covering by cuts. Zbl 1200.05165 Šámal, Robert 3 2005 Hamilton cycles in strong products of graphs. Zbl 1062.05087 Král’, Daniel; Maxová, Jana; Šámal, Robert; Podbrdský, Pavel 3 2005 Pancyclicity of strong products of graphs. Zbl 1055.05095 Král, Daniel; Maxová, Jana; Podbrdský, Pavel; Šámal, Robert 3 2004 Antisymmetric flows and strong oriented coloring of planar graphs. Zbl 1029.05054 Šámal, Robert 1 2003 On the number of intersections of two polygons. Zbl 1099.52004 Černý, Jakub; Kára, Jan; Král’, Daniel; Podbrdský, Pavel; Sotáková, Miroslava; Šámal, Robert 1 2003 all cited Publications top 5 cited Publications all top 5 Cited by 353 Authors 14 Šámal, Robert 8 Roberson, David E. 7 Mazzuoccolo, Giuseppe 6 Nešetřil, Jaroslav 5 Máčajová, Edita 5 Raspaud, André 4 Dȩbski, Michał 4 Li, Jiaao 4 Mančinska, Laura 4 Mohar, Bojan 4 Škoviera, Martin 4 Varvitsiotis, Antonios E. 3 Amooshahi, Marzieh 3 Ashrafi, Ali Reza 3 Ghorbani, Modjtaba 3 Godsil, Christopher David 3 Kerdjoudj, Samia 3 Lukot’ka, Robert 3 Lužar, Borut 3 Ma, Xuanlong 3 Miao, Zhengke 3 Mkrtchyan, Vahan V. 3 Mockovčiaková, Martina 3 Müyesser, Alp 3 Paulsen, Vern Ival 3 Pradeep, Kavita 3 Rooney, Brendan 3 Śleszyńska-Nowak, Małgorzata 3 Soták, Roman 3 Taeri, Bijan 3 Wang, Kaishun 3 Wang, Wei-Fan 3 Wang, Ying 2 Cabello, Sergio 2 Cheng, Yangyang 2 Choi, Ilkyoo 2 Dvořák, Zdeněk 2 Eifler, Kari 2 Elphick, Clive 2 Esperet, Louis 2 Fan, Genghua 2 Färnqvist, Tommy 2 Fomin, Fedor V. 2 Golovach, Petr A. 2 Han, Miaomiao 2 Hou, Xinmin 2 Jonsson, Peter 2 Kim, Jaehoon 2 Koorepazan-Moftakhar, Fatemeh 2 Král’, Daniel 2 Lamaison, Ander 2 Li, Xueliang 2 Luo, Rong 2 Lupini, Martino 2 Musto, Benjamin 2 Park, Boram 2 Potočnik, Primož 2 Rahaman, Mizanur 2 Severini, Simone 2 Škrekovski, Riste 2 Stacho, Ladislav 2 Tait, Michael 2 Thapper, Johan 2 Thilikos, Dimitrios M. 2 Todorov, Ivan G. 2 Verdon, Dominic 2 Wang, Guanghui 2 Wang, Tao 2 Wang, Yiqiao 2 Weber, Moritz 2 Wocjan, Pawel 2 Wood, David Ronald 2 Zapata, Octavio 2 Zerafa, Jean Paul 2 Zhang, Shenggui 1 Abramsky, Samson 1 Ackerman, Eyal 1 Ahmadi, Amir Ali 1 Alikhani, Saeid 1 Alishahi, Meysam 1 Allie, Imran 1 Amato, Daniela A. 1 Anastos, Michael 1 Anekstein, David 1 Anholcer, Marcin 1 Atserias, Albert 1 Babiński, Sebastian 1 Bai, Yandong 1 Balandraud, Éric 1 Bang-Jensen, Jørgen 1 Beaudou, Laurent 1 Ben-Ameur, Walid 1 Bezegová, L’udmila 1 Bhanja, Jagannath 1 Biswas, Arindam 1 Bok, Jan 1 Bokal, Drago 1 Bonnet, Edouard 1 Bosek, Bartłomiej 1 Brannan, Michael ...and 253 more Authors all top 5 Cited in 65 Serials 18 Discrete Mathematics 16 The Electronic Journal of Combinatorics 15 European Journal of Combinatorics 13 Journal of Graph Theory 11 Discrete Applied Mathematics 8 Graphs and Combinatorics 7 SIAM Journal on Discrete Mathematics 6 Applied Mathematics and Computation 6 Journal of Combinatorial Theory. Series B 5 Discussiones Mathematicae. Graph Theory 4 Linear Algebra and its Applications 3 Discrete & Computational Geometry 2 Communications in Mathematical Physics 2 Journal of Mathematical Physics 2 Bulletin of the London Mathematical Society 2 Theoretical Computer Science 2 Journal of Algebraic Combinatorics 2 Journal of Mathematical Chemistry 2 Acta Mathematica Sinica. English Series 2 Algebraic Combinatorics 1 Communications in Algebra 1 Computers & Mathematics with Applications 1 Indian Journal of Pure & Applied Mathematics 1 Israel Journal of Mathematics 1 Linear and Multilinear Algebra 1 Advances in Mathematics 1 Commentationes Mathematicae Universitatis Carolinae 1 Dissertationes Mathematicae 1 Indiana University Mathematics Journal 1 Journal of Functional Analysis 1 Journal of Pure and Applied Algebra 1 Combinatorica 1 Information and Computation 1 Applied Mathematics Letters 1 Random Structures & Algorithms 1 Designs, Codes and Cryptography 1 Expositiones Mathematicae 1 Mathematical Programming. Series A. Series B 1 Indagationes Mathematicae. New Series 1 Experimental Mathematics 1 Combinatorics, Probability and Computing 1 Turkish Journal of Mathematics 1 Filomat 1 Top 1 Annals of Mathematics and Artificial Intelligence 1 International Transactions in Operational Research 1 Honam Mathematical Journal 1 Mathematical Physics, Analysis and Geometry 1 Journal of Combinatorial Optimization 1 Journal of Discrete Mathematical Sciences & Cryptography 1 Communications in Nonlinear Science and Numerical Simulation 1 CEJOR. Central European Journal of Operations Research 1 Annales Henri Poincaré 1 Foundations of Computational Mathematics 1 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 1 Comptes Rendus. Mathématique. Académie des Sciences, Paris 1 Algebra and Discrete Mathematics 1 AKCE International Journal of Graphs and Combinatorics 1 Proyecciones 1 Complex Analysis and Operator Theory 1 Ars Mathematica Contemporanea 1 Forum of Mathematics, Sigma 1 SIAM Journal on Applied Algebra and Geometry 1 The Art of Discrete and Applied Mathematics 1 Advances in Combinatorics all top 5 Cited in 28 Fields 165 Combinatorics (05-XX) 16 Quantum theory (81-XX) 14 Computer science (68-XX) 10 Group theory and generalizations (20-XX) 10 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 8 Operations research, mathematical programming (90-XX) 7 Functional analysis (46-XX) 6 Linear and multilinear algebra; matrix theory (15-XX) 6 Biology and other natural sciences (92-XX) 5 Number theory (11-XX) 4 Information and communication theory, circuits (94-XX) 3 Nonassociative rings and algebras (17-XX) 3 Category theory; homological algebra (18-XX) 3 Convex and discrete geometry (52-XX) 2 Mathematical logic and foundations (03-XX) 2 Real functions (26-XX) 2 Operator theory (47-XX) 1 History and biography (01-XX) 1 Order, lattices, ordered algebraic structures (06-XX) 1 General algebraic systems (08-XX) 1 Commutative algebra (13-XX) 1 Topological groups, Lie groups (22-XX) 1 Geometry (51-XX) 1 Manifolds and cell complexes (57-XX) 1 Statistics (62-XX) 1 Numerical analysis (65-XX) 1 Mechanics of particles and systems (70-XX) 1 Statistical mechanics, structure of matter (82-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.