A More General Existence Theorem for Weak Solutions in Banach Spaces. Derna University Journal of Applied Sciences, [S. l.], v. 2, n. 2, p. 148–159, 2025. DOI: 10.58987/8nzmrz73. Disponível em: https://dp.uod.edu.ly/index.php/dujas/article/view/99. Acesso em: 25 may. 2026.