@article{MZM_1985_38_4_a1,
     author = {E. V. Kashincev},
     title = {Analogs of {Magnus'} theorem for groups with small contraction, and the fact that they cannot be strengthened},
     journal = {Matemati\v{c}eskie zametki},
     pages = {494--502},
     publisher = {mathdoc},
     volume = {38},
     number = {4},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1985_38_4_a1/}
}