@article{MZM_1995_58_6_a7,
     author = {A. S. Sorokin},
     title = {Keldysh{\textendash}Sedov formulas and differentiability with respect to the parameter of families of univalent functions in $n$-connected domains},
     journal = {Matemati\v{c}eskie zametki},
     pages = {878--889},
     year = {1995},
     volume = {58},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1995_58_6_a7/}
}