%0 Journal Article
%A Wolfgang Degen
%A Klaus Leeb
%A Giuseppe Pirillo
%A Helmut Sperber
%T Some Things Some Functions May Be, Some Others Can't Be
%J Séminaire lotharingien de combinatoire
%D 1984
%V 10
%U http://geodesic.mathdoc.fr/item/SLC_1984_10_a13/
%F SLC_1984_10_a13