@article{IM2_1976_10_4_a3,
     author = {S. G. Tankeev},
     title = {On homomorphisms of {Abelian} schemes},
     journal = {Izvestiya. Mathematics},
     pages = {731--747},
     year = {1976},
     volume = {10},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1976_10_4_a3/}
}