@article{SM_1974_22_3_a7,
     author = {P. F. Kurchanov},
     title = {On the rank of elliptic curves over $\Gamma$-extensions},
     journal = {Sbornik. Mathematics},
     pages = {465--472},
     publisher = {mathdoc},
     volume = {22},
     number = {3},
     year = {1974},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1974_22_3_a7/}
}