@article{DA_1997_4_4_a4,
     author = {A. M. Romanov},
     title = {On nonsystematic perfect codes of length~15},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {75--78},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_1997_4_4_a4/}
}