@article{UZKU_1931_91_4_a2,
     author = {P. A. Shirokov},
     title = {{\CYRC}{\cyre}{\cyrp}{\cyrn}{\cyra}{\cyrya} {\cyrl}{\cyri}{\cyrn}{\cyri}{\cyrya} {\cyrv}~{\cyrp}{\cyrr}{\cyro}{\cyrs}{\cyrt}{\cyrr}{\cyra}{\cyrn}{\cyrs}{\cyrt}{\cyrv}{\cyre} {{\CYRL}{\cyro}{\cyrb}{\cyra}{\cyrch}{\cyre}{\cyrv}{\cyrs}{\cyrk}{\cyro}{\cyrg}{\cyro}}},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {24--30},
     year = {1931},
     volume = {91},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_1931_91_4_a2/}
}