GAL, Sorin G.; IANCU, Ionuț T. Fredholm and Volterra nonlinear possibilistic integral equations. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 66, n. 1, p. 105–113, 2021. DOI: 10.24193/subbmath.2021.1.09. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1263. Acesso em: 10 feb. 2025.