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@article{MI_1971__6_3_189105, author = {{\CYRB}.{\CYRA}. {\CYRSHCH}{\cyre}{\cyrr}{\cyrb}{\cyra}{\cyrk}{\cyro}{\cyrv}}, title = {{\CYRN}{\cyre}{\cyrk}{\cyro}{\cyrt}{\cyro}{\cyrr}{\cyrery}{\cyre} {\cyrs}{\cyrv}{\cyro}{\cyrishrt}{\cyrs}{\cyrt}{\cyrv}{\cyra} {\cyrk}{\cyrl}{\cyra}{\cyrs}{\cyrs}{\cyro}{\cyrv} {\cyri}{\cyrz}{\cyro}{\cyrh}{\cyrr}{\cyro}{\cyrn}{\cyrn}{\cyrery}{\cyrh} {\cyrf}{\cyru}{\cyrn}{\cyrk}{\cyrc}{\cyri}{\cyrishrt}}, journal = {Matemati\v{c}eskie issledovani\^a}, pages = {188--196}, publisher = {mathdoc}, volume = {6}, number = {3}, year = {1971}, zbl = {0288.34045}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MI_1971__6_3_189105/} }
Б.А. Щербаков. Некоторые свойства классов изохронных функций. Matematičeskie issledovaniâ, Tome 6 (1971) no. 3, pp. 188-196. http://geodesic.mathdoc.fr/item/MI_1971__6_3_189105/