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@article{MZ_1933__37_168442, author = {L.J. Mordell}, title = {The number of solutions of some congruences in two variables.}, journal = {Mathematische Zeitschrift}, pages = {193--209}, publisher = {mathdoc}, volume = {37}, year = {1933}, zbl = {0007.00501}, url = {http://geodesic.mathdoc.fr/item/MZ_1933__37_168442/} }
L.J. Mordell. The number of solutions of some congruences in two variables.. Mathematische Zeitschrift, Tome 37 (1933), pp. 193-209. http://geodesic.mathdoc.fr/item/MZ_1933__37_168442/