On the Existence of Flux as a Function of the Surface Elevation for Long Wave Solution of Shallow Water Equations. Electronic Journal of Applied Mathematics, [S. l.], v. 2, n. 1, p. 22–29, 2024. DOI: 10.61383/ejam.20242154. Disponível em: https://ejamjournal.com/index.php/ejam/article/view/ejam.20242154. Acesso em: 1 jul. 2025.