%0 Journal Article
%A Howalla, K.
%A Dabboucy, Abdallah N.
%A Tout, R.
%T An extremal problem for some classes of oriented graphs
%J Časopis pro pěstování matematiky
%D 1983
%P 53-69
%V 108
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.21136/CPM.1983.118158/
%R 10.21136/CPM.1983.118158
%G en
%F 10_21136_CPM_1983_118158