ALP, Necmettin; SARIKAYA, Mehmet Zeki. On (p, q)-Opial type inequalities for (p, q)-calculus. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 66, n. 4, p. 641–657, 2021. DOI: 10.24193/subbmath.2021.4.04. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1401. Acesso em: 5 feb. 2025.