@article{05551209,
title = {Tiling proofs of some formulas for the Pell numbers of odd index.},
journal = {Integers},
volume = {9},
year = {2009},
pages = {53-64},
doi = {10.1515/INTEG.2009.006},
zbl = {1207.11023},
language = {en},
url = {http://dml.mathdoc.fr/item/05551209}
}
Shattuck, Mark. Tiling proofs of some formulas for the Pell numbers of odd index.. Integers, Tome 9 (2009) pp. 53-64. doi : 10.1515/INTEG.2009.006. http://gdmltest.u-ga.fr/item/05551209/