@article{DAN_1980_254_6_a17,
     author = {S. A. Feodorov},
     title = {On an extremal property of spheres in {Hamming} spaces},
     journal = {Doklady Akademii Nauk},
     pages = {1353--1357},
     publisher = {mathdoc},
     volume = {254},
     number = {6},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_254_6_a17/}
}