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@article{DE_1972_8_7_a18, author = {E. D. Zhitelzeif}, title = {The limit cycles of the {Rayleigh} equation}, journal = {Differencialʹnye uravneni\^a}, pages = {1309--1311}, publisher = {mathdoc}, volume = {8}, number = {7}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1972_8_7_a18/} }
E. D. Zhitelzeif. The limit cycles of the Rayleigh equation. Differencialʹnye uravneniâ, Tome 8 (1972) no. 7, pp. 1309-1311. http://geodesic.mathdoc.fr/item/DE_1972_8_7_a18/