@article{ARM_1979__15_4_a0,
     author = {Angelov, Vasil G. and Bajnov, Drumi Dimitrov},
     title = {{\CYRS}{\cyru}{\cyrshch}{\cyre}{\cyrs}{\cyrt}{\cyrv}{\cyro}{\cyrv}{\cyra}{\cyrn}{\cyri}{\cyre} {\cyri} {\cyre}{\cyrd}{\cyri}{\cyrn}{\cyrs}{\cyrt}{\cyrv}{\cyre}{\cyrn}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyrsftsn} {\cyrr}{\cyre}{\cyrsh}{\cyre}{\cyrn}{\cyri}{\cyrya} {\cyro}{\cyrb}{\cyro}{\cyrb}{\cyrshch}{\cyre}{\cyrn}{\cyrn}{\cyro}{\cyrishrt} {\cyrn}{\cyra}{\cyrch}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyro}{\cyrishrt} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} {{\CYRK}{\cyro}{\cyrsh}{\cyri}} {\cyrd}{\cyrl}{\cyrya} {\cyrn}{\cyre}{\cyrk}{\cyro}{\cyrt}{\cyro}{\cyrr}{\cyrery}{\cyrh} {\cyrn}{\cyre}{\cyrl}{\cyri}{\cyrn}{\cyre}{\cyrishrt}{\cyrn}{\cyrery}{\cyrh} {\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} {\cyrv} {{\CYRB}{\cyra}{\cyrn}{\cyra}{\cyrh}{\cyro}{\cyrv}{\cyro}{\cyrm}} {\cyrp}{\cyrr}{\cyro}{\cyrs}{\cyrt}{\cyrr}{\cyra}{\cyrn}{\cyrs}{\cyrt}{\cyrv}{\cyre}},
     journal = {Archivum mathematicum},
     pages = {185--192},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {1979},
     mrnumber = {563145},
     zbl = {0441.45020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ARM_1979__15_4_a0/}
}