Edit Profile (opens in new tab) Sotteau, Dominique Compute Distance To: Compute Author ID: sotteau.dominique Published as: Sotteau, D.; Sotteau, Dominique Documents Indexed: 55 Publications since 1976 1 Contribution as Editor Co-Authors: 30 Co-Authors with 52 Joint Publications 1,415 Co-Co-Authors all top 5 Co-Authors 2 single-authored 25 Heydemann, Marie-Claude 13 Bermond, Jean-Claude 7 Germa, Anne 3 Bouabdallah, Abdelmadjid 3 Hahn, Gena 2 Flajolet, Philippe 2 Huang, Charlotte 2 Kouider, Mekkia 2 Laforest, Christian 2 Liestman, Arthur L. 2 Narayanan, Lata 2 Shermer, Thomas Caton 1 Alspach, Brian R. 1 Bennett, Frank E. 1 Chakroun, Nasr 1 Favaron, Odile 1 König, Jean-Claude 1 Kratochvíl, Jan 1 Li, Qiao 1 Peleg, David 1 Peroche, Bernard 1 Peters, Joseph G. 1 Régnier, Mireille 1 Rosa, Alexander 1 Rosenberg, Arnold Leonard 1 Širáň, Jozef 1 Thomassen, Carsten 1 Thulasiraman, Krishnaiyan “KT” 1 Wojda, Adam Paweł 1 Xu, Junming all top 5 Serials 11 Discrete Mathematics 6 Ars Combinatoria 5 Discrete Applied Mathematics 3 Journal of Combinatorial Theory. Series B 3 Networks 1 Information Processing Letters 1 IEEE Transactions on Computers 1 Journal of Combinatorial Theory. Series A 1 Journal of Graph Theory 1 Combinatorica 1 Algorithmica 1 SIAM Journal on Discrete Mathematics 1 Journal of Parallel and Distributed Computing 1 Parallel Algorithms and Applications 1 Theory of Computing Systems 1 DIMACS. Series in Discrete Mathematics and Theoretical Computer Science all top 5 Fields 43 Combinatorics (05-XX) 16 Computer science (68-XX) 5 Operations research, mathematical programming (90-XX) 4 Information and communication theory, circuits (94-XX) 1 General and overarching topics; collections (00-XX) 1 Geometry (51-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 48 Publications have been cited 618 times in 517 Documents Cited by ▼ Year ▼ Decomposition of K//(m,n)(K*//(m,n)) into cycles (circuits) of length 2k. Zbl 0463.05048Sotteau, D. 97 1981 On the injective chromatic number of graphs. Zbl 1007.05046Hahn, Geňa; Kratochvíl, Jan; Širáň, Jozef; Sotteau, Dominique 77 2002 On forwarding indices of networks. Zbl 0681.90077Heydemann, M. C.; Meyer, J. C.; Sotteau, D. 65 1989 Decomposition into cycles. I: Hamilton decompositions. Zbl 0713.05047Alspach, B.; Bermond, J.-C.; Sotteau, D. 51 1990 Graph decompositions and G-designs. Zbl 0331.05021Bermond, J. C.; Sotteau, D. 31 1976 Decomposition of complete graphs into isomorphic subgraphs with five vertices. Zbl 0454.05053Bermond, J.-C.; Huang, C.; Rosa, A.; Sotteau, D. 26 1980 Balanced cycle and circuit designs: Even cases. Zbl 0434.05020Bermond, J. C.; Huang, C.; Sotteau, D. 25 1978 Embeddings of complete binary trees into grids and extended grids with total vertex-congestion 1. Zbl 0949.05016Opatrny, J.; Sotteau, D. 21 2000 Cycles in the cube-connected cycles graph. Zbl 0910.05037Germa, Anne; Heydemann, Marie-Claude; Sotteau, Dominique 19 1998 Hypergraphes hamiltoniens. Zbl 0413.05041Bermond, J. C.; Germa, A.; Heydemann, M. C.; Sotteau, D. 15 1978 Chemins et circuits dans les graphes orientes. Zbl 0453.05032Bermond, J. C.; Sotteau, D.; Germa, A.; Heydemann, M. C. 14 1980 Resolvable decomposition of \(K^*_n\). Zbl 0411.05027Bermond, J. C.; Germa, A.; Sotteau, D. 12 1979 Forwarding indices of consistent routings and their complexity. Zbl 0804.90041Heydemann, M. C.; Meyer, J. C.; Sotteau, D.; Opatrny, J. 12 1994 Almost resolvable decomposition of K//n*. Zbl 0509.05042Bennett, F. E.; Sotteau, D. 10 1981 Spanners of hypercube-derived networks. Zbl 0841.68008Heydemann, Marie-Claude; Peters, Joseph G.; Sotteau, Dominique 10 1996 Broadcasting and spanning trees in de Bruijn and Kautz networks. Zbl 0755.94017Heydemann, M. C.; Opatrny, J.; Sotteau, D. 9 1992 On the edge forwarding index problem for small graphs. Zbl 0778.05042Bouabdallah, Abdelmadjid; Sotteau, Dominique 8 1993 Hypergraph-designs. Zbl 0394.05011Bermond, J. C.; Germa, A.; Sotteau, D. 8 1977 Forwarding indices of \(k\)-connected graphs. Zbl 0761.05054Heydemann, M. C.; Meyer, J. C.; Opatrny, J.; Sotteau, D. 8 1992 2-diameter of de Bruijn graphs. Zbl 0865.90056Li, Qiao; Sotteau, Dominique; Xu, Junming 7 1996 Cycle and circuit designs: odd case. Zbl 0411.05025Bermond, J. C.; Sotteau, D. 7 1977 Line graphs of hypergraphs. I. Zbl 0366.05047Bermond, J. C.; Heydemann, M. C.; Sotteau, D. 6 1977 Orientations of Hamiltonian cycles in digraphs. Zbl 0503.05036Heydemann, M. C.; Sotteau, D.; Thomassen, C. 6 1982 All-to-all optical routing in chordal rings of degree 4. Zbl 0980.68010Narayanan, L.; Opatrny, J.; Sotteau, D. 6 2001 Girth in digraphs. Zbl 0412.05048Bermond, J. C.; Germa, A.; Heydemann, M. C.; Sotteau, D. 5 1980 On regular packings and coverings. Zbl 0644.05031Bermond, J.-C.; Bond, J.; Sotteau, D. 5 1987 All-to-all optical routing in optimal chordal rings of degree four. Zbl 1052.68517Narayanan, L.; Opatrny, J.; Sotteau, D. 5 1999 Edge-disjoint spanners of complete bipartite graphs. Zbl 0982.05058Laforest, Christian; Liestman, Arthur L.; Shermer, Thomas C.; Sotteau, Dominique 5 2001 Embedding complete binary trees into star and Pancake graphs. Zbl 0896.68108Bouabdallah, A.; Heydemann, M. C.; Opatrny, J.; Sotteau, D. 5 1998 Longest paths in digraphs. Zbl 0488.05039Bermond, J. C.; Germa, A.; Heydemann, M. C.; Sotteau, D. 4 1981 Star sub-Ramsey numbers. Zbl 0629.05047Fraisse, P.; Hahn, G.; Sotteau, D. 4 1987 On the existence of a matching orthogonal to a 2-factorization. Zbl 0687.05034Kouider, M.; Sotteau, D. 4 1989 On the forwarding index problem for small graphs. Zbl 0664.05029Heydemann, M. C.; Meyer, J. C.; Sotteau, D. 3 1988 Algebraic methods for trie statistics. Zbl 0562.68016Flajolet, Philippe; Regnier, Mireille; Sotteau, Dominique 3 1985 About some cyclic properties in digraphs. Zbl 0565.05031Heydemann, M. C.; Sotteau, D. 3 1985 Embeddings of complete binary trees into extended grids with edge-congestion 1. Zbl 1049.68505Heydemann, M.-C.; Sotteau, D.; Opatrny, J. 3 1996 Line-graphs of hypergraphs. II. Zbl 0426.05042Heydemann, M.-C.; Sotteau, D. 3 1978 A note on recursive properties of the de Bruijn, Kautz and FFT digraphs. Zbl 0875.68683Heydemann, M. C.; Sotteau, D. 2 1995 Chvátal-Erdős theorem for digraphs. Zbl 0707.05029Chakroun, N.; Sotteau, D. 2 1990 Realizable values of the forwarding index. Zbl 0687.05026Heydemann, M.-C.; Meyer, J.-C.; Opatrny, J.; Sotteau, D. 2 1990 Number of arcs and cycles in digraphs. Zbl 0548.05030Heydemann, M. C.; Sotteau, D. 2 1984 DCC linear congruential graphs: A new class of interconnection networks. Zbl 1068.68559Opatrny, J.; Sotteau, D.; Srinivasan, N.; Thulasiraman, K. 2 1996 A recursive partitioning process of computer science. Zbl 0499.68025Flajolet, Philippe; Sotteau, Dominique 1 1982 Linear congruential graphs. Zbl 0739.05074Opatrny, J.; Sotteau, D. 1 1991 A parameter linked with \(G\)-factors and the binding number. Zbl 0756.05067Favaron, O.; Heydemann, M. C.; Meyer, J. C.; Sotteau, D. 1 1991 Embeddings of hypercubes and grids into de Bruijn graphs. Zbl 0814.68097Heydemann, M. C.; Opatrny, J.; Sotteau, D. 1 1994 Embeddings of hypercubes and grids into de Bruijn graphs. Zbl 0850.68081Heydemann, M. C.; Opatrny, J.; Sotteau, D. 1 1992 Digraphs without directed path of length two or three. Zbl 0581.05027Sotteau, D.; Wojda, A. P. 1 1986 On the injective chromatic number of graphs. Zbl 1007.05046Hahn, Geňa; Kratochvíl, Jan; Širáň, Jozef; Sotteau, Dominique 77 2002 All-to-all optical routing in chordal rings of degree 4. Zbl 0980.68010Narayanan, L.; Opatrny, J.; Sotteau, D. 6 2001 Edge-disjoint spanners of complete bipartite graphs. Zbl 0982.05058Laforest, Christian; Liestman, Arthur L.; Shermer, Thomas C.; Sotteau, Dominique 5 2001 Embeddings of complete binary trees into grids and extended grids with total vertex-congestion 1. Zbl 0949.05016Opatrny, J.; Sotteau, D. 21 2000 All-to-all optical routing in optimal chordal rings of degree four. Zbl 1052.68517Narayanan, L.; Opatrny, J.; Sotteau, D. 5 1999 Cycles in the cube-connected cycles graph. Zbl 0910.05037Germa, Anne; Heydemann, Marie-Claude; Sotteau, Dominique 19 1998 Embedding complete binary trees into star and Pancake graphs. Zbl 0896.68108Bouabdallah, A.; Heydemann, M. C.; Opatrny, J.; Sotteau, D. 5 1998 Spanners of hypercube-derived networks. Zbl 0841.68008Heydemann, Marie-Claude; Peters, Joseph G.; Sotteau, Dominique 10 1996 2-diameter of de Bruijn graphs. Zbl 0865.90056Li, Qiao; Sotteau, Dominique; Xu, Junming 7 1996 Embeddings of complete binary trees into extended grids with edge-congestion 1. Zbl 1049.68505Heydemann, M.-C.; Sotteau, D.; Opatrny, J. 3 1996 DCC linear congruential graphs: A new class of interconnection networks. Zbl 1068.68559Opatrny, J.; Sotteau, D.; Srinivasan, N.; Thulasiraman, K. 2 1996 A note on recursive properties of the de Bruijn, Kautz and FFT digraphs. Zbl 0875.68683Heydemann, M. C.; Sotteau, D. 2 1995 Forwarding indices of consistent routings and their complexity. Zbl 0804.90041Heydemann, M. C.; Meyer, J. C.; Sotteau, D.; Opatrny, J. 12 1994 Embeddings of hypercubes and grids into de Bruijn graphs. Zbl 0814.68097Heydemann, M. C.; Opatrny, J.; Sotteau, D. 1 1994 On the edge forwarding index problem for small graphs. Zbl 0778.05042Bouabdallah, Abdelmadjid; Sotteau, Dominique 8 1993 Broadcasting and spanning trees in de Bruijn and Kautz networks. Zbl 0755.94017Heydemann, M. C.; Opatrny, J.; Sotteau, D. 9 1992 Forwarding indices of \(k\)-connected graphs. Zbl 0761.05054Heydemann, M. C.; Meyer, J. C.; Opatrny, J.; Sotteau, D. 8 1992 Embeddings of hypercubes and grids into de Bruijn graphs. Zbl 0850.68081Heydemann, M. C.; Opatrny, J.; Sotteau, D. 1 1992 Linear congruential graphs. Zbl 0739.05074Opatrny, J.; Sotteau, D. 1 1991 A parameter linked with \(G\)-factors and the binding number. Zbl 0756.05067Favaron, O.; Heydemann, M. C.; Meyer, J. C.; Sotteau, D. 1 1991 Decomposition into cycles. I: Hamilton decompositions. Zbl 0713.05047Alspach, B.; Bermond, J.-C.; Sotteau, D. 51 1990 Chvátal-Erdős theorem for digraphs. Zbl 0707.05029Chakroun, N.; Sotteau, D. 2 1990 Realizable values of the forwarding index. Zbl 0687.05026Heydemann, M.-C.; Meyer, J.-C.; Opatrny, J.; Sotteau, D. 2 1990 On forwarding indices of networks. Zbl 0681.90077Heydemann, M. C.; Meyer, J. C.; Sotteau, D. 65 1989 On the existence of a matching orthogonal to a 2-factorization. Zbl 0687.05034Kouider, M.; Sotteau, D. 4 1989 On the forwarding index problem for small graphs. Zbl 0664.05029Heydemann, M. C.; Meyer, J. C.; Sotteau, D. 3 1988 On regular packings and coverings. Zbl 0644.05031Bermond, J.-C.; Bond, J.; Sotteau, D. 5 1987 Star sub-Ramsey numbers. Zbl 0629.05047Fraisse, P.; Hahn, G.; Sotteau, D. 4 1987 Digraphs without directed path of length two or three. Zbl 0581.05027Sotteau, D.; Wojda, A. P. 1 1986 Algebraic methods for trie statistics. Zbl 0562.68016Flajolet, Philippe; Regnier, Mireille; Sotteau, Dominique 3 1985 About some cyclic properties in digraphs. Zbl 0565.05031Heydemann, M. C.; Sotteau, D. 3 1985 Number of arcs and cycles in digraphs. Zbl 0548.05030Heydemann, M. C.; Sotteau, D. 2 1984 Orientations of Hamiltonian cycles in digraphs. Zbl 0503.05036Heydemann, M. C.; Sotteau, D.; Thomassen, C. 6 1982 A recursive partitioning process of computer science. Zbl 0499.68025Flajolet, Philippe; Sotteau, Dominique 1 1982 Decomposition of K//(m,n)(K*//(m,n)) into cycles (circuits) of length 2k. Zbl 0463.05048Sotteau, D. 97 1981 Almost resolvable decomposition of K//n*. Zbl 0509.05042Bennett, F. E.; Sotteau, D. 10 1981 Longest paths in digraphs. Zbl 0488.05039Bermond, J. C.; Germa, A.; Heydemann, M. C.; Sotteau, D. 4 1981 Decomposition of complete graphs into isomorphic subgraphs with five vertices. Zbl 0454.05053Bermond, J.-C.; Huang, C.; Rosa, A.; Sotteau, D. 26 1980 Chemins et circuits dans les graphes orientes. Zbl 0453.05032Bermond, J. C.; Sotteau, D.; Germa, A.; Heydemann, M. C. 14 1980 Girth in digraphs. Zbl 0412.05048Bermond, J. C.; Germa, A.; Heydemann, M. C.; Sotteau, D. 5 1980 Resolvable decomposition of \(K^*_n\). Zbl 0411.05027Bermond, J. C.; Germa, A.; Sotteau, D. 12 1979 Balanced cycle and circuit designs: Even cases. Zbl 0434.05020Bermond, J. C.; Huang, C.; Sotteau, D. 25 1978 Hypergraphes hamiltoniens. Zbl 0413.05041Bermond, J. C.; Germa, A.; Heydemann, M. C.; Sotteau, D. 15 1978 Line-graphs of hypergraphs. II. Zbl 0426.05042Heydemann, M.-C.; Sotteau, D. 3 1978 Hypergraph-designs. Zbl 0394.05011Bermond, J. C.; Germa, A.; Sotteau, D. 8 1977 Cycle and circuit designs: odd case. Zbl 0411.05025Bermond, J. C.; Sotteau, D. 7 1977 Line graphs of hypergraphs. I. Zbl 0366.05047Bermond, J. C.; Heydemann, M. C.; Sotteau, D. 6 1977 Graph decompositions and G-designs. Zbl 0331.05021Bermond, J. C.; Sotteau, D. 31 1976 all cited Publications top 5 cited Publications all top 5 Cited by 752 Authors 18 Rodger, Christopher Andrew 18 Sotteau, Dominique 12 Heydemann, Marie-Claude 11 Smith, Benjamin R. 10 Fu, Hunglin 10 Muthusamy, Appu 10 Paulraja, P. 10 Xu, Junming 9 Bu, Yuehua 9 Hsu, Lihhsing 9 Rajasingh, Indra 9 Zhou, Sanming 8 Bermond, Jean-Claude 8 Bryant, Darryn E. 8 Kang, Qingde 8 Pérennes, Stéphane 8 Raspaud, André 7 Arockiaraj, Micheal 7 El-Zanati, Saad I. El-Zanati 7 Kühn, Daniela 7 Osthus, Deryk 7 Tan, Jimmy J. M. 6 Bennett, Frank E. 6 Billington, Elizabeth J. 6 Cavenagh, Nicholas J. 6 Horsley, Daniel 6 Lindner, Charles Curtis 6 Manuel, Paul D. 6 Rajan, Bharati 6 Xu, Min 5 Bunge, Ryan C. 5 Fu, Chin-Mei 5 Ge, Gennian 5 Heinrich, Katherine 5 Liang, Zhihe 5 Manoussakis, Yannis G. 5 Martin, Barnaby D. 5 Paulusma, Daniël 5 Smith, Siani 4 Abraham, Jessie 4 Alspach, Brian R. 4 Burgess, Andrea C. 4 He, Weihua 4 Jordon, Heather 4 Liestman, Arthur L. 4 MacGillivray, Gary 4 Mokhtar, Hamid 4 Šajna, Mateja 4 Shalini, Arul Jeya 4 Tarsi, Michael 4 Thomson, Alison 4 Wojda, Adam Paweł 4 Xu, Baogang 3 Araki, Toru 3 Asplund, John 3 Bai, Yandong 3 Borse, Y. M. 3 Chen, Genhuey 3 Cicerone, Serafino 3 Colbourn, Charles J. 3 Di Stefano, Gabriele 3 Dong, Wei 3 Fang, Xingui 3 Fernandez de la Vega, Wenceslas 3 Ganesamurthy, S. 3 Germa, Anne 3 Gionfriddo, Mario 3 Jeevadoss, Shanmugasundaram 3 Kim, Seog-Jin 3 Kolotoğlu, Emre 3 Kumar, S. Sampath 3 Lee, Hung-Chih 3 Li, Hao 3 Lonc, Zbigniew 3 Lu, Kai 3 Maenhaut, Barbara M. 3 Monakhova, Eh. A. 3 Monien, Burkhard 3 Mycroft, Richard 3 Ordaz, Oscar 3 Pike, David A. 3 Qian, Jianguo 3 Rajan, R. Sundara 3 Roberts, Dan P. 3 Rosa, Alexander 3 Shermer, Thomas Caton 3 Shyu, Tay-Woei 3 Swarts, Jacobus Stephanus 3 Yang, Weihua 3 Yue, Jun 3 Zhang, Fuji 2 Abel, R. Julian R. 2 Abiad, Aida 2 Adams, Peter J. 2 Alfaro-Bittner, Karin 2 Amar, Denise 2 Bazighifan, Omar 2 Benhocine, Abdelhamid 2 Boccaletti, Stefano 2 Bok, Jan ...and 652 more Authors all top 5 Cited in 95 Serials 116 Discrete Mathematics 64 Discrete Applied Mathematics 32 Graphs and Combinatorics 18 Information Processing Letters 17 Theoretical Computer Science 15 Journal of Combinatorial Theory. Series B 15 Journal of Combinatorial Designs 14 European Journal of Combinatorics 12 Journal of Combinatorial Theory. Series A 11 Discrete Mathematics, Algorithms and Applications 9 Journal of Statistical Planning and Inference 9 Journal of Combinatorial Optimization 8 Discussiones Mathematicae. Graph Theory 7 Networks 7 The Australasian Journal of Combinatorics 5 Applied Mathematics and Computation 5 Journal of Graph Theory 5 Acta Mathematicae Applicatae Sinica. English Series 5 Linear Algebra and its Applications 4 Bulletin of the Australian Mathematical Society 4 Computers & Mathematics with Applications 4 Information Sciences 4 Electronic Journal of Graph Theory and Applications 3 Designs, Codes and Cryptography 3 Aequationes Mathematicae 3 Combinatorics, Probability and Computing 3 The Electronic Journal of Combinatorics 3 Opuscula Mathematica 3 Taiwanese Journal of Mathematics 3 Journal of Discrete Mathematical Sciences & Cryptography 3 Acta Mathematica Sinica. English Series 3 AKCE International Journal of Graphs and Combinatorics 2 Israel Journal of Mathematics 2 Czechoslovak Mathematical Journal 2 Combinatorica 2 International Journal of Foundations of Computer Science 2 Computational Statistics 2 International Journal of Computer Mathematics 2 Applied Mathematics. Series B (English Edition) 2 Annals of Combinatorics 2 South East Asian Journal of Mathematics and Mathematical Sciences 2 Journal of Discrete Algorithms 2 Discrete Optimization 2 Mathematics in Computer Science 2 Frontiers of Mathematics in China 2 Journal of Function Spaces 2 Prikladnaya Diskretnaya Matematika 1 Linear and Multilinear Algebra 1 Physics Reports 1 Chaos, Solitons and Fractals 1 Advances in Mathematics 1 Computing 1 Journal of Computer and System Sciences 1 Journal of Pure and Applied Algebra 1 Journal of Soviet Mathematics 1 Mathematica Slovaca 1 Mathematical Systems Theory 1 Siberian Mathematical Journal 1 Transactions of the American Mathematical Society 1 Advances in Applied Mathematics 1 Statistics & Probability Letters 1 Operations Research Letters 1 Advances in Mathematics 1 Order 1 Journal of Complexity 1 Algorithmica 1 Applied Mathematics Letters 1 SIAM Journal on Discrete Mathematics 1 Science in China. Series A 1 Journal of Parallel and Distributed Computing 1 Random Structures & Algorithms 1 The Journal of Supercomputing 1 RAIRO. Informatique Théorique et Applications 1 Cybernetics and Systems Analysis 1 Filomat 1 International Transactions in Operational Research 1 Parallel Algorithms and Applications 1 Journal of the European Mathematical Society (JEMS) 1 Lobachevskii Journal of Mathematics 1 Journal of the Australian Mathematical Society 1 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 1 Journal of Applied Mathematics and Computing 1 Boletim da Sociedade Paranaense de Matemática. Terceira Série 1 International Journal of Parallel, Emergent and Distributed Systems 1 Applicable Analysis and Discrete Mathematics 1 RAIRO. Theoretical Informatics and Applications 1 Journal of Applied Mathematics & Informatics 1 Arabian Journal of Mathematics 1 Palestine Journal of Mathematics 1 Journal of the Operations Research Society of China 1 Journal of Mathematics 1 ISRN Combinatorics 1 Proceedings of the Yerevan State University. Physical and Mathematical Sciences 1 Journal of Algebra, Combinatorics, Discrete Structures and Applications 1 AIMS Mathematics all top 5 Cited in 20 Fields 458 Combinatorics (05-XX) 110 Computer science (68-XX) 32 Operations research, mathematical programming (90-XX) 14 Information and communication theory, circuits (94-XX) 6 Statistics (62-XX) 3 Linear and multilinear algebra; matrix theory (15-XX) 2 Dynamical systems and ergodic theory (37-XX) 2 Geometry (51-XX) 2 Numerical analysis (65-XX) 1 History and biography (01-XX) 1 Number theory (11-XX) 1 Functions of a complex variable (30-XX) 1 Integral transforms, operational calculus (44-XX) 1 Convex and discrete geometry (52-XX) 1 Probability theory and stochastic processes (60-XX) 1 Fluid mechanics (76-XX) 1 Quantum theory (81-XX) 1 Statistical mechanics, structure of matter (82-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 1 Biology and other natural sciences (92-XX) Citations by Year