Periodic solutions for a kind of Rayleigh equation with two deviating arguments

In this paper, we use the coincidence degree theory to establish new results on the existence of T-periodic solutions for the Rayleigh equation with two deviating arguments of the formx″+f(x′(t))+g1(t,x(t-τ1(t)))+g2(t,x(t-τ2(t)))=p(t).