@article{KUKZ_1990_25_25_a12,
     author = {N. B. Il'inskii and A. V. Rubinovskii},
     title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyra} {\cyro}~{\cyrp}{\cyrr}{\cyro}{\cyrb}{\cyri}{\cyrv}{\cyra}{\cyrn}{\cyri}{\cyri}
},
     journal = {Trudy seminara po kraevym zada\v{c}am},
     pages = {150--158},
     publisher = {mathdoc},
     volume = {25},
     number = {25},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKZ_1990_25_25_a12/}
}