@article{DE_1995_31_12_a16, author = {N. S. Berezkina and I. P. Martynov and V. A. Pron'ko}, title = {{\CYRO}~{\cyrk}{\cyrv}{\cyra}{\cyrd}{\cyrr}{\cyra}{\cyrt}{\cyri}{\cyrch}{\cyrn}{\cyrery}{\cyrh} {\cyrs}{\cyri}{\cyrs}{\cyrt}{\cyre}{\cyrm}{\cyra}{\cyrh} {\cyrt}{\cyrr}{\cyre}{\cyrt}{\cyrsftsn}{\cyre}{\cyrg}{\cyro} {\cyrp}{\cyro}{\cyrr}{\cyrya}{\cyrd}{\cyrk}{\cyra} {\cyrv}~{\cyrv}{\cyrery}{\cyrr}{\cyro}{\cyrzh}{\cyrd}{\cyre}{\cyrn}{\cyrn}{\cyro}{\cyrm} {\cyrs}{\cyrl}{\cyru}{\cyrch}{\cyra}{\cyre}}, journal = {Differencialʹnye uravneni\^a}, pages = {2073--2074}, publisher = {mathdoc}, volume = {31}, number = {12}, year = {1995}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1995_31_12_a16/} }