Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1990_47_3_a1, author = {G. A. Bekishev}, title = {Hadamard matrices and difference families}, journal = {Matemati\v{c}eskie zametki}, pages = {11--16}, publisher = {mathdoc}, volume = {47}, number = {3}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1990_47_3_a1/} }
G. A. Bekishev. Hadamard matrices and difference families. Matematičeskie zametki, Tome 47 (1990) no. 3, pp. 11-16. http://geodesic.mathdoc.fr/item/MZM_1990_47_3_a1/