@article{MZM_1983_33_1_a12,
     author = {V. A. Dem'yanenko},
     title = {Differents of points of torsion},
     journal = {Matemati\v{c}eskie zametki},
     pages = {111--116},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1983_33_1_a12/}
}