Derivation of Sawada-Kotera and Kaup-Kupershmidt Equations KdV Flow Equations from Modified Nonlinear Schrödinger Equation (MNLS)ns from Modfied Nonlinear Schrödinger Equation (MNLS). Contemporary Mathematics , [S. l.], v. 5, n. 4, p. 4223–4234, 2024. DOI: 10.37256/cm.5420244648. Disponível em: https://ojs353.mebyme.cn/index.php/CM/article/view/4648. Acesso em: 24 dec. 2025.