МУСАТАЕВА, А.; МЫРЗАКУЛОВ, Н. The first and second fundamental forms for the Camassa-Holm equation. BULLETIN OF THE L.N. GUMILYOV EURASIAN NATIONAL UNIVERSITY. PHYSICS. ASTRONOMY SERIES, [S. l.], v. 129, n. 4, p. 65–72, 2022. DOI: 10.32523/2616-6836-2019-129-4-65-72. Disponível em: https://bulphysast.enu.kz/index.php/physast/article/view/214. Acesso em: 3 may. 2024.