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@article{MOMA_1951__55_176874, author = {L.J. Mordell}, title = {On the {Equation} ax2 + by2 - cz2 = 0.}, journal = {Monatshefte f\"ur Mathematik}, pages = {323--327}, publisher = {mathdoc}, volume = {55}, year = {1951}, url = {http://geodesic.mathdoc.fr/item/MOMA_1951__55_176874/} }
L.J. Mordell. On the Equation ax2 + by2 - cz2 = 0.. Monatshefte für Mathematik, Tome 55 (1951), pp. 323-327. http://geodesic.mathdoc.fr/item/MOMA_1951__55_176874/