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@article{JRAM_1977__291_151865, author = {S. Chowla and M.J. Cowles}, title = {On the diophantine equation 27y2 + 4x3 = {M.}}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {220--220}, publisher = {mathdoc}, volume = {291}, year = {1977}, zbl = {0351.10013}, url = {http://geodesic.mathdoc.fr/item/JRAM_1977__291_151865/} }
S. Chowla; M.J. Cowles. On the diophantine equation 27y2 + 4x3 = M.. Journal für die reine und angewandte Mathematik, Tome 291 (1977), p. 220. http://geodesic.mathdoc.fr/item/JRAM_1977__291_151865/