@article{RM_1976_31_5_a16,
     author = {B. L. Van der Waerden},
     title = {Pell's equation in {Greek} and {Hindu} mathematics},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {210--225},
     publisher = {mathdoc},
     volume = {31},
     number = {5},
     year = {1976},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1976_31_5_a16/}
}