@article{MMKZ_2004_2_a15,
     author = {E. S. Vorob'eva and D. N. Tsivinskii},
     title = {{\CYRCH}{\cyri}{\cyrs}{\cyrl}{\cyre}{\cyrn}{\cyrn}{\cyrery}{\cyre} {\cyrm}{\cyre}{\cyrt}{\cyro}{\cyrd}{\cyrery} {\cyrr}{\cyre}{\cyrsh}{\cyre}{\cyrn}{\cyri}{\cyrya} {\cyrd}{\cyri}{\cyrf}{\cyrf}{\cyru}{\cyrz}{\cyri}{\cyro}{\cyrz}{\cyrn}{\cyrery}{\cyrh} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch} {\cyrg}{\cyre}{\cyro}{\cyrl}{\cyro}{\cyrg}{\cyri}{\cyri}},
     journal = {Matematicheskoe Modelirovanie i Kraevye Zadachi},
     pages = {50--52},
     publisher = {mathdoc},
     volume = {2},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMKZ_2004_2_a15/}
}