@article{JRAM_1985__356_152697,
     author = {P. Ribenboim},
     title = {An extension of {Sophie} {Germain's} method to a wide class of diophantine equations.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {49--66},
     publisher = {mathdoc},
     volume = {356},
     year = {1985},
     zbl = {0546.10013},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1985__356_152697/}
}