@article{MZM_1975_18_2_a15,
     author = {V. I. Levenshtein},
     title = {Maximal packing density of $n$-dimensional {Euclidean} space with equal balls},
     journal = {Matemati\v{c}eskie zametki},
     pages = {301--311},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1975_18_2_a15/}
}