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@article{PORMA_1999__56_3_48442, author = {Lindstr\"om, B.}, title = {Primitive quadratics reflected in -sequences.}, journal = {Portugaliae mathematica}, pages = {257--263}, publisher = {mathdoc}, volume = {56}, number = {3}, year = {1999}, zbl = {0939.11012}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1999__56_3_48442/} }
Lindström, B. Primitive quadratics reflected in -sequences.. Portugaliae mathematica, Tome 56 (1999) no. 3, pp. 257-263. http://geodesic.mathdoc.fr/item/PORMA_1999__56_3_48442/