ABASSY, Tamer Ahmed. Solving 2nd Order Nonlinear Differential Equations Using Piecewise Analytic Method (Pendulum Equations). International Journal of Applied Mathematical Research, [S. l.], v. 10, n. 1, p. 10–17, 2021. DOI: 10.14419/ijamr.v10i1.31119. Disponível em: https://sciencepubco.com/index.php/ijamr/article/view/31119.. Acesso em: 21 dec. 2024.