LIRA VÁZQUEZ, A.; CORONA-CORONA, G. Period of the Simple Pendulum without Differential Equations. American Scientific Research Journal for Engineering, Technology, and Sciences, [S. l.], v. 40, n. 1, p. 125–131, 2018. Disponível em: https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/3866. Acesso em: 6 may. 2024.