%0 Journal Article
%A I. A. Bykadorov
%A G. Sh. Rubinshtein
%T Some families of discrete extremal problems on unbounded locally
%J Doklady Akademii Nauk
%D 1997
%P 443-445
%V 352
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1997_352_4_a1/
%G ru
%F DAN_1997_352_4_a1