@article{JRAM_1968__230_150848,
     author = {Paromita Chowla},
     title = {On the class-number of real quadratic fields.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {51--60},
     publisher = {mathdoc},
     volume = {230},
     year = {1968},
     zbl = {0155.38002},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1968__230_150848/}
}