%0 Journal Article %A E. D. Zhitelzeif %T The limit cycles of the Rayleigh equation %J Differencialʹnye uravneniâ %D 1972 %P 1309-1311 %V 8 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1972_8_7_a18/ %G ru %F DE_1972_8_7_a18