@article{JRAM_1979__0307_0308_152128,
     author = {Patrick Morton},
     title = {On {R\'edei's} theory of the {Pell} equation.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {373--398},
     publisher = {mathdoc},
     volume = {0307_0308},
     year = {1979},
     zbl = {0395.12018},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1979__0307_0308_152128/}
}