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@article{PORMA_1998__55_3_48126, author = {McDaniel, Wayne L.}, title = {Perfect squares in the sequence .}, journal = {Portugaliae mathematica}, pages = {349--353}, publisher = {mathdoc}, volume = {55}, number = {3}, year = {1998}, zbl = {0912.11006}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1998__55_3_48126/} }
McDaniel, Wayne L. Perfect squares in the sequence .. Portugaliae mathematica, Tome 55 (1998) no. 3, pp. 349-353. http://geodesic.mathdoc.fr/item/PORMA_1998__55_3_48126/