Montealegre Scott, Juan. Initial Value Problem for a Coupled System of Kadomtsev-Petviashvili II Equations in Sobolev Spaces of Negative Indices. Pro Mathematica 22, no. 43-44 (septiembre 7, 2008): 67-88. Accedido noviembre 27, 2022. https://revistas.pucp.edu.pe/index.php/promathematica/article/view/10257.