@article{IVM_1960_5_a17,
     author = {G. V. Siryk},
     title = {Generalization to the doubly-connected case of {Lavrent'ev's} variational formula for the conformal mapping of neighboring simply-connected domains},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {152--159},
     publisher = {mathdoc},
     number = {5},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1960_5_a17/}
}