Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1989__30_4_a17, author = {Kratochv{\'\i}l, Jan}, title = {Perfect codes and two-graphs}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {755--760}, publisher = {mathdoc}, volume = {30}, number = {4}, year = {1989}, mrnumber = {1045906}, zbl = {0693.05060}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1989__30_4_a17/} }
Kratochvíl, Jan. Perfect codes and two-graphs. Commentationes Mathematicae Universitatis Carolinae, Tome 30 (1989) no. 4, pp. 755-760. http://geodesic.mathdoc.fr/item/CMUC_1989__30_4_a17/