@article{MP_1958_a19,
     author = {L. A. Kaluzhnin and A. A. Stognii and M. Ya. Yadrenko},
     title = {{\CYRK}{\cyri}{\cyre}{\cyrv}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {229--234},
     publisher = {mathdoc},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1958_a19/}
}