1. On generalized graphs;Bollobàs;Arta Math. Acad. Sci. Hungar,1965
2. Nombre maximal d'arêtes d'un hypergraphe-critique de rang h;Jaeger;C. R. Acad. Sci. Paris,1971
3. Solution of a problem of Ehrenfeucht and Mycielski;Katona;J. Combin. Theory Ser. A,1974
4. Flats, in matroids and geometric graphs;Lovàsz,1977
5. J. E. Pin, On two combinatorial problems arising from automata theory, Proc. Int. Colloq., Marseille-Luminy, 1981 (to appear).