@article{MP_1957_a7,
     author = {G. M. Fikhtengol'ts},
     title = {{\CYRI}{\cyrr}{\cyrr}{\cyra}{\cyrc}{\cyri}{\cyro}{\cyrn}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyre} {\cyrch}{\cyri}{\cyrs}{\cyrl}{\cyra} {\cyrv}~{\cyrs}{\cyrr}{\cyre}{\cyrd}{\cyrn}{\cyre}{\cyrishrt} {\cyrsh}{\cyrk}{\cyro}{\cyrl}{\cyre}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {133--148},
     publisher = {mathdoc},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1957_a7/}
}