@article{MS_1980__155_4_a0,
     author = {{\CYRE}.{\CYRM}. {\CYRN}{\cyri}{\cyrk}{\cyri}{\cyrsh}{\cyri}{\cyrn}},
     title = {517.53},
     journal = {Matemati\v{c}eskij sbornik},
     pages = {499--519},
     publisher = {mathdoc},
     volume = {155},
     number = {4},
     year = {1980},
     zbl = {0456.30009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MS_1980__155_4_a0/}
}