@article{TRSPY_2017_298_a9,
     author = {V. A. Zorich},
     title = {On the {Isotopy} {Problem} for {Quasiconformal} {Mappings}},
     journal = {Informatics and Automation},
     pages = {139--143},
     publisher = {mathdoc},
     volume = {298},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2017_298_a9/}
}