MESMOULI, M. B.; IAMBOR, L. F. .; OSMAN TUNÇ; HASSAN, T. S. . Existence of Solutions and Ulam Stability Analysis of Implicit (<i>p</i>, <i>q</i>)- Fractional Difference Equations. Contemporary Mathematics , [S. l.], v. 6, n. 6, p. 7619–7635, 2025. DOI: 10.37256/cm.6620258140. Disponível em: https://ojs.wiserpub.com/index.php/CM/article/view/8140. Acesso em: 1 jan. 2026.