On the attractors of Two-Dimensional Rayleigh oscillators Including Noise.

Udo Erdmann Werner Ebeling On the attractors of Two-Dimensional Rayleigh oscillators Including Noise. 3623-3633 2005 15 I. J. Bifurcation and Chaos 11 http://dx.doi.org/10.1142/S0218127405014271 db/journals/ijbc/ijbc15.html#ErdmannE05