@article{KUKZ_1987_23_23_a28,
     author = {E. A. Shirokova},
     title = {Univalent change of univalent functions},
     journal = {Trudy seminara po kraevym zada\v{c}am},
     pages = {258--263},
     publisher = {mathdoc},
     volume = {23},
     number = {23},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKZ_1987_23_23_a28/}
}