The Existence and Exact Multiplicity of One-Sign Solutions for Semilinear Elliptic Problems in $\mathbb{R}^N$. Journal of Partial Differential Equations, [S. l.], v. 38, n. 4, p. 476–493, 2025. DOI: 10.4208/jpde.v38.n4.6. Disponível em: https://www.global-sci.com/index.php/jpde/article/view/23468. Acesso em: 26 feb. 2026.