%0 Journal Article
%A F. V. Shirokov
%A V. A. Signayevskiy
%T Minimum coverings of a finite set
%J Doklady Akademii Nauk
%D 1972
%P 1066-1069
%V 207
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1972_207_5_a13/
%G ru
%F DAN_1972_207_5_a13