A Novel Fixed Point Framework for Positive Solutions to Coupled Undamped Sturm-Liouville Systems. Contemporary Mathematics , [S. l.], v. 6, n. 6, p. 7564–7578, 2025. DOI: 10.37256/cm.6620257733. Disponível em: https://ojs353.mebyme.cn/index.php/CM/article/view/7733. Acesso em: 24 dec. 2025.