@article{IM2_1971_5_4_a0,
     author = {Jean-Pierre Serre},
     title = {Sur les groupes de congruence des vari\'et\'es {ab\'eliennes.~II}},
     journal = {Izvestiya. Mathematics },
     pages = {747--753},
     publisher = {mathdoc},
     volume = {5},
     number = {4},
     year = {1971},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1971_5_4_a0/}
}