@article{GDZPPN002470624,
title = {On the Equation ax2 + by2 - cz2 = 0.},
journal = {Monatshefte f\"ur Mathematik},
volume = {55},
year = {1951},
pages = {323-327},
url = {http://dml.mathdoc.fr/item/GDZPPN002470624}
}
Mordell, L.J. On the Equation ax2 + by2 - cz2 = 0.. Monatshefte für Mathematik, Tome 55 (1951) pp. 323-327. http://gdmltest.u-ga.fr/item/GDZPPN002470624/