1. Graphs and Hypergraphs;Berge,1973
2. Factorisation de graphes complets et calendriers de compétitions;Holland,1979
3. Decompositions of complete graphs into regular bichromatic factors;Kotzig;Discrete Math.,1972
4. Scheduling in sports;de Werra,1981
5. Geography, games and graphs;de Werra;Discrete Appl. Math.,1980