@article{KYB_1971_7_2_a1,
     author = {Cypkin, Ja. Z.},
     title = {{\CYRO}{\cyrb}{\cyru}{\cyrch}{\cyra}{\cyryu}{\cyrshch}{\cyri}{\cyre}{\cyrs}{\cyrya} {\cyrm}{\cyro}{\cyrd}{\cyre}{\cyrl}{\cyri}},
     journal = {Kybernetika},
     pages = {92--108},
     year = {1971},
     volume = {7},
     number = {2},
     mrnumber = {0312969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KYB_1971_7_2_a1/}
}