@article{VMUMM_1990_4_a27,
     author = {S. V. Lyudkovskii},
     title = {{\CYRP}{\cyro}{\cyrp}{\cyrr}{\cyra}{\cyrv}{\cyrk}{\cyra} {\cyrk} {\cyrs}{\cyrt}{\cyra}{\cyrt}{\cyrsftsn}{\cyre} {``{\CYRM}{\cyra}{\cyrt}{\cyrr}{\cyri}{\cyrc}{\cyrery},} {\cyrp}{\cyrr}{\cyre}{\cyrd}{\cyrs}{\cyrt}{\cyra}{\cyrv}{\cyrl}{\cyrya}{\cyryu}{\cyrshch}{\cyri}{\cyre} {\cyrk}{\cyra}{\cyrn}{\cyro}{\cyrn}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyre} {\cyrerev}{\cyrl}{\cyre}{\cyrm}{\cyre}{\cyrn}{\cyrt}{\cyrery} {\cyru}{\cyrn}{\cyri}{\cyrv}{\cyre}{\cyrr}{\cyrs}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyrh} {\cyro}{\cyrb}{\cyre}{\cyrr}{\cyrt}{\cyrery}{\cyrv}{\cyra}{\cyryu}{\cyrshch}{\cyri}{\cyrh} {\cyrk}{\cyrl}{\cyra}{\cyrs}{\cyrs}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyrh} {\cyra}{\cyrl}{\cyrg}{\cyre}{\cyrb}{\cyrr} {{\CYRL}{\cyri}} {\cyrv} {\cyrb}{\cyra}{\cyrz}{\cyri}{\cyrs}{\cyre} {{\CYRG}{\cyre}{\cyrl}{\cyrsftsn}{\cyrf}{\cyra}{\cyrn}{\cyrd}{\cyra}--{\CYRC}{\cyre}{\cyrt}{\cyrl}{\cyri}{\cyrn}{\cyra}''} (1989, {\No~5.} {{\CYRS}.} 73--76)},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {105},
     publisher = {mathdoc},
     number = {4},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1990_4_a27/}
}