Aomar Anane and  Omar Chakrone and  Loubna Moutaouekkil,  Existence of Periodic Solution for p-Laplacian Neutral Rayleigh Equation with Sign-variable Coefficient of Non Linear Term.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    September 2013, vol. 75(3). 487 - 494
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/17004.