@article{DAN_1993_331_3_a1,
     author = {R. R. Varshamov},
     title = {Some problems of projective arithmetic},
     journal = {Doklady Akademii Nauk},
     pages = {263--268},
     publisher = {mathdoc},
     volume = {331},
     number = {3},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1993_331_3_a1/}
}