%0 Journal Article
%A A. M. Revyakin
%T A certain construction in categories of combinatorial geometries and mappings
%J Doklady Akademii Nauk
%D 1976
%P 1055-1058
%V 229
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1976_229_5_a6/
%G ru
%F DAN_1976_229_5_a6