“…The model equations are with the parameters a ) 1, b ) -2, c ) 2, d ) -0.8, p ) 5, q ) -6.3, r ) 0.1, λ ) 10, and ) 10 -4 . Models with cubic nonlinearity have long been employed as a simple representation showing complex dynamics in mechanical (Van-der-Pol oscillations) as well as in chemical systems (Sheintuch and Luss, 1989). Analysis of this model can be performed according to section 2.…”