@article{GDZPPN002335905, title = {On the structure of Selmer groups.}, journal = {Mathematische Annalen}, volume = {291}, year = {1991}, pages = {253-260}, url = {http://dml.mathdoc.fr/item/GDZPPN002335905} }
Koyvagin, V.A. On the structure of Selmer groups.. Mathematische Annalen, Tome 291 (1991) pp. 253-260. http://gdmltest.u-ga.fr/item/GDZPPN002335905/