@article{MZM_1998_63_4_a2,
     author = {V. A. Dem'yanenko},
     title = {Sharp estimates of torsion of elliptic curves},
     journal = {Matemati\v{c}eskie zametki},
     pages = {503--508},
     publisher = {mathdoc},
     volume = {63},
     number = {4},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1998_63_4_a2/}
}