Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MP_1957_a14, author = {V. I. Levin}, title = {{\CYRO}{\cyrb}{\cyro}{\cyrb}{\cyrshch}{\cyre}{\cyrn}{\cyri}{\cyre} {\cyra}{\cyrr}{\cyri}{\cyrf}{\cyrm}{\cyre}{\cyrt}{\cyri}{\cyrk}{\cyro}-{\cyrg}{\cyre}{\cyro}{\cyrm}{\cyre}{\cyrt}{\cyrr}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyro}{\cyrg}{\cyro} {\cyrs}{\cyrr}{\cyre}{\cyrd}{\cyrn}{\cyre}{\cyrg}{\cyro}}, journal = {Matematicheskoe Prosveshchenie}, pages = {195--204}, publisher = {mathdoc}, year = {1957}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MP_1957_a14/} }
V. I. Levin. Обобщение арифметико-геометрического среднего. Matematicheskoe Prosveshchenie, Математика, ее преподавание, приложения и история (1957), pp. 195-204. http://geodesic.mathdoc.fr/item/MP_1957_a14/