@article{DAN_1977_236_5_a1,
     author = {V. Ya. Gutlyanskii},
     title = {On the method of variations for univalent analytic functions with quasi- conformal extension},
     journal = {Doklady Akademii Nauk},
     pages = {1045--1048},
     publisher = {mathdoc},
     volume = {236},
     number = {5},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_236_5_a1/}
}