@article{02214417, title = {Two very short proofs of combinatorial identity.}, journal = {Integers}, volume = {5}, year = {2005}, zbl = {1102.11013}, language = {en}, url = {http://dml.mathdoc.fr/item/02214417} }
Anglani, Roberto; Barile, Margherita. Two very short proofs of combinatorial identity.. Integers, Tome 5 (2005) . http://gdmltest.u-ga.fr/item/02214417/