Wang, Shaoheng, and Yuming Feng. “THE IMPACT OF NONLINEAR INCIDENCE RATE AND REMOVABLE STORAGE MEDIA ON VIRAL PREVALENCE”. Italian Journal of Pure and Applied Mathematics 37 (January 31, 2017): 377–386. Accessed September 16, 2026. https://journals.uniurb.it/index.php/ijpam/article/view/6698.