TY  - JOUR
AU  - Yidong Sun
TI  - A simple proof of an identity of Lacasse
JO  - The electronic journal of combinatorics
PY  - 2013
VL  - 20
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.37236/3032/
DO  - 10.37236/3032
ID  - 10_37236_3032
ER  -