2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/62804Oscillatory integral techniques are used to study the well-posedness of the KP-I equation for initial data that are small with respect to the norm of a weighted Sobolev space involving derivatives of total order no larger than 2.fixed mistaken replacement with the proper file. The paper is to appear in Moscow Mathematical JournalAnalysis of PDEs35Q53, 35Q55text