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@article{CM_1974__29_3_249_0, author = {Baumslag, Gilbert}, title = {Residually finite groups with the same finite images}, journal = {Compositio Mathematica}, pages = {249--252}, publisher = {Noordhoff International Publishing}, volume = {29}, number = {3}, year = {1974}, mrnumber = {357615}, zbl = {0309.20007}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1974__29_3_249_0/} }
Baumslag, Gilbert. Residually finite groups with the same finite images. Compositio Mathematica, Tome 29 (1974) no. 3, pp. 249-252. http://geodesic.mathdoc.fr/item/CM_1974__29_3_249_0/