Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MP_1961_a35, author = {A. S. Kovan'ko}, title = {{\CYRS}{\cyro}{\cyro}{\cyrb}{\cyrshch}{\cyre}{\cyrn}{\cyri}{\cyrya} {\cyro} {\cyrsh}{\cyrk}{\cyro}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyrh} {\cyrm}{\cyra}{\cyrt}{\cyre}{\cyrm}{\cyra}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyrh} {\cyro}{\cyrl}{\cyri}{\cyrm}{\cyrp}{\cyri}{\cyra}{\cyrd}{\cyra}{\cyrh}: u{\cyro}{\cyrr}. {{\CYRL}{\cyrsftsn}{\cyrv}{\cyro}{\cyrv}}}, journal = {Matematicheskoe Prosveshchenie}, pages = {314}, publisher = {mathdoc}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MP_1961_a35/} }
A. S. Kovan'ko. Сообщения о школьных математических олимпиадах: uор. Львов. Matematicheskoe Prosveshchenie, Математика, ее преподавание, приложения и история (1961). http://geodesic.mathdoc.fr/item/MP_1961_a35/