Talha MS, 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. Contemp. Math. [Internet]. 2026 May 29 [cited 2026 Nov. 14];7(3):3705-37. Available from: https://ojs.wiserpub.com/index.php/CM/article/view/9704