Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DM_1995_7_2_a5, author = {B. T. Rumov}, title = {A lower bound for the cardinality of a class of cyclic difference families}, journal = {Diskretnaya Matematika}, pages = {79--87}, publisher = {mathdoc}, volume = {7}, number = {2}, year = {1995}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DM_1995_7_2_a5/} }
B. T. Rumov. A lower bound for the cardinality of a class of cyclic difference families. Diskretnaya Matematika, Tome 7 (1995) no. 2, pp. 79-87. http://geodesic.mathdoc.fr/item/DM_1995_7_2_a5/