@article{05014508, title = {A bijective proof of }, journal = {Integers}, volume = {6}, year = {2006}, zbl = {1134.11305}, language = {en}, url = {http://dml.mathdoc.fr/item/05014508} }
Matchett Wood, Philip. A bijective proof of . Integers, Tome 6 (2006) . http://gdmltest.u-ga.fr/item/05014508/