@article{IVM_1983_2_a1,
     author = {L. A. Aksent'ev and P. L. Shabalin},
     title = {Conditions for univalence with a quasiconformal extension and its application},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {6--14},
     year = {1983},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1983_2_a1/}
}