@article{IM2_1970_4_2_a8,
     author = {A. N. Parshin},
     title = {Isogenies and torsion of elliptic curves},
     journal = {Izvestiya. Mathematics },
     pages = {415--430},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1970},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1970_4_2_a8/}
}