Nistal, Raul, Manuel de la Sen, Santiago Alonso-Quesada, and Asier Ibeas. “On a Generalized SVEIR Epidemic Model under Regular and Adaptive Impulsive Vaccination”. Nonlinear Analysis: Modelling and Control 19, no. 1 (January 20, 2014): 83–108. Accessed May 5, 2024. https://www.journals.vu.lt/nonlinear-analysis/article/view/13694.