@article{UZKU_1931_91_4_a1,
     author = {N. G. Chebotarev},
     title = {{\CYRK} {\cyrt}{\cyre}{\cyro}{\cyrr}{\cyri}{\cyri} {\cyru}{\cyrz}{\cyrl}{\cyro}{\cyrv}},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {9--23},
     publisher = {mathdoc},
     volume = {91},
     number = {4},
     year = {1931},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_1931_91_4_a1/}
}