%0 Journal Article
%A E.M. WRIGHT
%T The Number of Graphs on Many Unlabelled Nodes.
%J Mathematische Annalen
%D 1969
%P 250-253
%V 183
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1969__183_161895/
%F MAN_1969__183_161895