@article{PA_1997_4_a2,
     author = {J. Godula and V. V. Starkov},
     title = {Linearly invariant families of harmonic locally quasiconformal mappings},
     journal = {Problemy analiza},
     pages = {50--61},
     year = {1997},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PA_1997_4_a2/}
}