@article{IVM_1964_6_a24,
     author = {L. Ya. Leifman},
     title = {{\CYRP}{\cyri}{\cyrs}{\cyrsftsn}{\cyrm}{\cyra} {\cyrv} {\cyrr}{\cyre}{\cyrd}{\cyra}{\cyrk}{\cyrc}{\cyri}{\cyryu}. {I}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {188},
     publisher = {mathdoc},
     number = {6},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1964_6_a24/}
}