MathSciNet bibliographic data MR243155 (39 #4479) 34.41 Ilʹjašenko, Ju. S. The appearance of limit cycles under a perturbation of the equation \$dw/dz=-R\sb{z}/R\sb{w}\$$dw/dz=-R\sb{z}/R\sb{w}$, where \$R(z,\,w)\$$R(z,\,w)$ is a polynomial. (Russian) Mat. Sb. (N.S.) 78 (120) 1969 360–373. Links to the journal or article are not yet available

For users without a MathSciNet license , Relay Station allows linking from MR numbers in online mathematical literature directly to electronic journals and original articles. Subscribers receive the added value of full MathSciNet reviews.