@article{ARM_1972__8_4_a5,
     author = {Dragieva, N. A. and Bajnov, Drumi Dimitrov},
     title = {{\CYRM}{\cyre}{\cyrt}{\cyro}{\cyrd} {\cyra}{\cyrs}{\cyri}{\cyrm}{\cyrp}{\cyrt}{\cyro}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyro}{\cyrg}{\cyro} {\cyri}{\cyrn}{\cyrt}{\cyre}{\cyrg}{\cyrr}{\cyri}{\cyrr}{\cyro}{\cyrv}{\cyra}{\cyrn}{\cyri}{\cyrya} {\cyrs}{\cyri}{\cyrs}{\cyrt}{\cyre}{\cyrm} {\cyri} {\cyrn}{\cyrt}{\cyre}{\cyrg}{\cyrr}{\cyro}-{\cyrd}{\cyri}{\cyrf}{\cyrf}{\cyre}{\cyrr}{\cyre}{\cyrn}{\cyrc}{\cyri}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyrh} {\cyru}{\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyrishrt} {\cyrs} {\cyrm}{\cyra}{\cyrl}{\cyrery}{\cyrm} {\cyrp}{\cyra}{\cyrr}{\cyra}{\cyrm}{\cyre}{\cyrt}{\cyrr}{\cyro}{\cyrm} {\cyrv} {\cyrs}{\cyrl}{\cyru}{\cyrch}{\cyra}{\cyre} {\cyrn}{\cyre}{\cyrs}{\cyro}{\cyri}{\cyrz}{\cyrm}{\cyre}{\cyrr}{\cyri}{\cyrm}{\cyrery}{\cyrh} {\cyrch}{\cyra}{\cyrs}{\cyrt}{\cyro}{\cyrt} {\cyrp}{\cyro}{\cyrr}{\cyro}{\cyrzh}{\cyrd}{\cyra}{\cyryu}{\cyrshch}{\cyre}{\cyrishrt} {\cyrs}{\cyri}{\cyrs}{\cyrt}{\cyre}{\cyrm}{\cyrery}},
     journal = {Archivum mathematicum},
     pages = {187--194},
     publisher = {mathdoc},
     volume = {08},
     number = {4},
     year = {1972},
     mrnumber = {0328515},
     zbl = {0307.45005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ARM_1972__8_4_a5/}
}