Rosu, H., Cornejo-Pérez, O., Pérez-Maldonado, M., & Belinchón, J. (2017). Extension of a factorization method of nonlinear second order ODE’s with variable coefficients. Revista Mexicana De Física, 63(3 May-Jun), 218–0. Retrieved from https://rmf.smf.mx/ojs/index.php/rmf/article/view/337