MONTEALEGRE SCOTT, Juan. Initial value problem for a coupled system of Kadomtsev-Petviashvili II equations in Sobolev spaces of negative indices. Pro Mathematica, [S. l.], v. 22, n. 43-44, p. 67–88, 2008. Disponível em: https://revistas.pucp.edu.pe/index.php/promathematica/article/view/10257. Acesso em: 7 dic. 2025.