%0 Journal Article
%A A. Yu. Zubov
%T About some classes of extremal oriented graphs
%J Prikladnaâ diskretnaâ matematika
%D 2015
%P 83-90
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PDM_2015_4_a7/
%G ru
%F PDM_2015_4_a7