Dynamical Analysis and Modeling of COVID-19 and Related Diseases under Comorbidity in Complex Domains (F. Adongo, A. Titus, B. Okelo, & B. . Onyango, Trans.). (2025). International Journal of Open Problems in Computer Science and Mathematics, 18(4), 70-92. https://ijopcm.zuj.edu.jo/index.php/IJOPCM/article/view/43