@article{1102968142, author = {Cohn, J. H. E.}, title = {Squares in some recurrent sequences.}, journal = {Pacific J. Math.}, volume = {43}, number = {3}, year = {1972}, pages = { 631-646}, language = {en}, url = {http://dml.mathdoc.fr/item/1102968142} }
Cohn, J. H. E. Squares in some recurrent sequences.. Pacific J. Math., Tome 43 (1972) no. 3, pp. 631-646. http://gdmltest.u-ga.fr/item/1102968142/