@article{KUKTF_1990_7_7_a4,
     author = {A. V. Kazantsev},
     title = {The inner radius of a domain in a problem on the change of contours},
     journal = {Konstruktivnaya Teoriya Funktsii i Funktsional'nyi Analiz},
     pages = {44--52},
     year = {1990},
     volume = {7},
     number = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKTF_1990_7_7_a4/}
}