%0 Journal Article
%A Yidong Sun
%T A simple proof of an identity of Lacasse
%J The electronic journal of combinatorics
%D 2013
%V 20
%N 2
%U http://geodesic.mathdoc.fr/articles/10.37236/3032/
%R 10.37236/3032
%F 10_37236_3032