@article{MZM_1986_39_3_a11,
     author = {A. Sh. Malkhasyan},
     title = {Periodicity exponent of solutions of equations in a free group},
     journal = {Matemati\v{c}eskie zametki},
     pages = {413--423},
     publisher = {mathdoc},
     volume = {39},
     number = {3},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1986_39_3_a11/}
}