@article{MM2_1990__68_2_155535, author = {John W. Jones}, title = {A comparison of {Selmer} groups.}, journal = {Manuscripta mathematica}, pages = {391--398}, publisher = {mathdoc}, volume = {68}, number = {2}, year = {1990}, zbl = {0731.11062}, url = {http://geodesic.mathdoc.fr/item/MM2_1990__68_2_155535/} }