@article{IVM_1988_1_a12,
     author = {I. P. Mityuk and B. E. Levitsii},
     title = {{\CYRK}{\cyru}{\cyrb}{\cyra}{\cyrn}{\cyrs}{\cyrk}{\cyra}{\cyrya} {\cyrsh}{\cyrk}{\cyro}{\cyrl}{\cyra}-{\cyrk}{\cyro}{\cyrn}{\cyrf}{\cyre}{\cyrr}{\cyre}{\cyrn}{\cyrc}{\cyri}{\cyrya} {\cyrp}{\cyro} {\cyrg}{\cyre}{\cyro}{\cyrm}{\cyre}{\cyrt}{\cyrr}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyro}{\cyrishrt} {\cyrt}{\cyre}{\cyro}{\cyrr}{\cyri}{\cyri} {\cyrf}{\cyru}{\cyrn}{\cyrk}{\cyrc}{\cyri}{\cyrishrt} {\cyrk}{\cyro}{\cyrm}{\cyrp}{\cyrl}{\cyre}{\cyrk}{\cyrs}{\cyrn}{\cyro}{\cyrg}{\cyro} {\cyrp}{\cyre}{\cyrr}{\cyre}{\cyrm}{\cyre}{\cyrn}{\cyrn}{\cyro}{\cyrg}{\cyro}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {84--85},
     publisher = {mathdoc},
     number = {1},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1988_1_a12/}
}