@article{MZM_1975_18_6_a0,
     author = {F. G. Avkhadiev},
     title = {Sufficient conditions for the univalence of quasiconformal mappings},
     journal = {Matemati\v{c}eskie zametki},
     pages = {793--802},
     publisher = {mathdoc},
     volume = {18},
     number = {6},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1975_18_6_a0/}
}