BOUCHAL, Lydia; MEBARKI, Karima; GEORGIEV, Svetlin Georgiev. Nonnegative solutions for a class of fourth order singular eigenvalue problems. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 69, n. 4, p. 905–912, 2024. DOI: 10.24193/subbmath.2024.4.14. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/8609. Acesso em: 5 feb. 2025.