@article{JRAM_1984__353_152668,
     author = {Christopher Hooley},
     title = {On the {Pellian} equation and the class number of indefinite binary quadratic forms.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {98--131},
     publisher = {mathdoc},
     volume = {353},
     year = {1984},
     zbl = {0539.10019},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1984__353_152668/}
}