@article{ZNSL_1977_71_a18,
     author = {G. P. Shestakova},
     title = {{\CYRO}~{\cyrm}{\cyro}{\cyrd}{\cyru}{\cyrl}{\cyrya}{\cyrh} {\cyrn}{\cyra}{\cyrd} {\cyrk}{\cyro}{\cyrl}{\cyrsftsn}{\cyrc}{\cyra}{\cyrm}{\cyri} {\cyrs}{\cyro} {\cyrs}{\cyrt}{\cyre}{\cyrp}{\cyre}{\cyrn}{\cyrn}{\cyrery}{\cyrm} {\cyrb}{\cyra}{\cyrz}{\cyri}{\cyrs}{\cyro}{\cyrm}},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {259--281},
     publisher = {mathdoc},
     volume = {71},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1977_71_a18/}
}