@article{MZM_1980_27_2_a9,
     author = {A. S. Sadullaev},
     title = {Schwarz lemma for circular domains and its applications},
     journal = {Matemati\v{c}eskie zametki},
     pages = {245--253},
     publisher = {mathdoc},
     volume = {27},
     number = {2},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1980_27_2_a9/}
}