Salinas-Hernández, E., Ares de Parga, G., Domínguez-Hernández, S. and Muñoz-Vega, R. (2017) “Approximate frequencies of the pendulum for large angles”, Revista Mexicana de Física E, 63(1 Jan-Jun), pp. 6–11. Available at: https://rmf.smf.mx/ojs/index.php/rmf-e/article/view/4762 (Accessed: 6 May 2024).