KABI-NEJAD, P. .; NADJAFIKHAH, M. . Generalized symmetries and higher-order Conservation laws of the Camassa–Holm equation: Mathematics-Physics. International Journal of Fundamental Physical Sciences, [S. l.], v. 9, n. 2, p. 20-25, 2019. DOI: 10.14331/ijfps.2019.330125. Disponível em: https://fundamentaljournals.org/index.php/ijfps/article/view/26. Acesso em: 1 mar. 2024.