Existence and Multiplicity Results for a Class of Nonlinear Schrödinger Equations with Magnetic Potential Involving Sign-Changing Nonlinearity. Analysis in Theory and Applications, [S. l.], v. 38, n. 2, p. 148–177, 2022. DOI: 10.4208/ata.OA-2021-0001. Disponível em: https://global-sci.com/index.php/ata/article/view/8247. Acesso em: 5 dec. 2025.