Arizmendi, C., Delgado, J., Núñez-Yépez, H. and Salas-Brito, A. (2003) “Conserved quantities in the variational equations”, Revista Mexicana de Física, 49(4), pp. 298–0. Available at: https://rmf.smf.mx/ojs/index.php/rmf/article/view/3167 (Accessed: 4 July 2024).