A Result of Ambrosetti-Prodi Type for First Order ODE’s with Concave and Coercive Right Member. Nonlinear Studies, [S. l.], v. 9, n. 4, 2002. Disponível em: https://www.nonlinearstudies.com/index.php/nonlinear/article/view/282. Acesso em: 18 mar. 2026.