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@article{TRSPY_1934_5_a5, author = {D. K. Faddeev}, title = {On the equation $x^4-Ay^4=\pm 1$}, journal = {Informatics and Automation}, pages = {41--52}, publisher = {mathdoc}, volume = {5}, year = {1934}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1934_5_a5/} }
D. K. Faddeev. On the equation $x^4-Ay^4=\pm 1$. Informatics and Automation, Travaux de l'Institut Physico-Mathématique Stekloff, Section Mathématique, Tome 5 (1934), pp. 41-52. http://geodesic.mathdoc.fr/item/TRSPY_1934_5_a5/