@article{IM2_1968_2_1_a11,
     author = {P. A. Medvedev},
     title = {Remark on my article {{\textquotedblleft}Order} and index of an elliptic curve{\textquotedblright}},
     journal = {Izvestiya. Mathematics},
     pages = {239},
     year = {1968},
     volume = {2},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1968_2_1_a11/}
}