TALHA, M. S.; WASEEM, M.; ALI, Z.; FATIMA, N.; SHAH, K.; ABDELJAWAD, T. A Unified Nonlinear Mathematical Model Based on Smoking-Vaping Dynamics with Spectral Graph Analysis and Simulation. Contemporary Mathematics , [S. l.], v. 7, n. 3, p. 3705–3737, 2026. DOI: 10.37256/cm.7320269704. Disponível em: https://ojs.wiserpub.com/index.php/CM/article/view/9704. Acesso em: 13 jun. 2026.