[1]
Najafi, M., Moghimi, M. and Massah, H. 2009. Analytical treatment for nonlinear oscillation equations and vibratory system of waves. Tamkang Journal of Mathematics. 40, 1 (Mar. 2009), 77–94. DOI:https://doi.org/10.5556/j.tkjm.40.2009.38.