%0 Journal Article
%A B. N. Delone
%A S. S. Ryshkov
%T Solution of the problem on the least dense lattice covering of a 4-dimensional space by equal spheres
%J Doklady Akademii Nauk
%D 1963
%P 523-524
%V 152
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_152_3_a3/
%G ru
%F DAN_1963_152_3_a3