@article{MZM_1983_34_6_a11,
     author = {S. P. Grushevskii},
     title = {Certain extremal problems on the class of the functions that map the upper half plane into itself},
     journal = {Matemati\v{c}eskie zametki},
     pages = {913--921},
     publisher = {mathdoc},
     volume = {34},
     number = {6},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1983_34_6_a11/}
}