IBRAHIM , Rabha W.; HARIKRISHNAN, Sugumaran; KANAGARAJAN, Kuppusamy. Existence and stability of Langevin equations with two Hilfer-Katugampola fractional derivatives. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 63, n. 3, p. 291–302, 2018. DOI: 10.24193/subbmath.2018.3.01. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/2081. Acesso em: 19 apr. 2025.