Hakmi MA, Nour M. A Fractional SEIAQR Model under Caputo and Atangana--Baleanu Operators: Dynamics, Sensitivity, and Estimation for the 2024 Algeria Diphtheria Outbreak. Stat., optim. inf. comput. [Internet]. 2026 Sep. 17 [cited 2026 Sep. 25];. Available from: https://iapress.org/index.php/soic/article/view/4585