A generalization of the S-function method applied to a Duffing-Van der Pol forced oscillator. - Antonio Braz; L. G. S. Duarte; L. A. C. P. da Mota (Comput. Phys. Commun., 2020)

A new way to use nonlocal symmetries to determine first integrals of second-order nonlinear ordinary differential equations. - Antonio Braz; L. G. S. Duarte; H. S. Ferreira; A. C. S. Guabiraba; L. A. C. P. da Mota; I. S. S. Nascimento (Comput. Phys. Commun., 2025)