Torres del Castillo, G., Andrade Mirón, C. and Bravo Rojas, R. (2013) “Variational symmetries of Lagrangians”, Revista Mexicana de Física E, 59(2 Jul-Dec), pp. 140–147. Available at: https://rmf.smf.mx/ojs/index.php/rmf-e/article/view/4707 (Accessed: 22 December 2024).