Extension of a factorization method of nonlinear second order ODE's with   variable coefficients
  The factorization of nonlinear second-order differential equations proposed by Rosu and Cornejo-Perez in 2005 is extended to equations containing quadratic and cubic forms in the first derivative. A few illustrative examples encountered in physics are provided. 
H.C. Rosu, O. Cornejo-Perez, M. Perez-Maldonado, J.A. Belinchon
math-ph math.MP