Gustavo Yañez., Nora Bretón., . and Alberto García. (1994) “Generalization of the Papacostas-Xanthopoulos solution”, Revista Mexicana de Física, 41(4), pp. 480–492. Available at: https://rmf.smf.mx/ojs/index.php/rmf/article/view/2506 (Accessed: 5 July 2024).