@article{GDZPPN002201852,
title = {On the Pellian equation and the class number of indefinite binary quadratic forms.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {346},
year = {1984},
pages = {98-131},
zbl = {0539.10019},
url = {http://dml.mathdoc.fr/item/GDZPPN002201852}
}
Hooley, Christopher. On the Pellian equation and the class number of indefinite binary quadratic forms.. Journal für die reine und angewandte Mathematik, Tome 346 (1984) pp. 98-131. http://gdmltest.u-ga.fr/item/GDZPPN002201852/