ALMALAHI , Mohammed A.; PANCHAL , Satish K.; ABDO , Mohammed S. Positive solution of Hilfer fractional differential equations with integral boundary conditions. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 66, n. 4, p. 709–722, 2021. DOI: 10.24193/subbmath.2021.4.09. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1409. Acesso em: 5 feb. 2025.