%0 Journal Article
%A Haff, C. E.
%A Murty, U. S. R.
%A Wilton, R. C.
%T A Note on Undirected Graphs Realizable as P.O. Sets
%J Canadian mathematical bulletin
%D 1970
%P 371-374
%V 13
%N 3
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-070-6/
%R 10.4153/CMB-1970-070-6
%F 10_4153_CMB_1970_070_6