Yoon-Gu Hwang, Hee-Dae Kwon & Jeehyun Lee. (2022). Optimal Control Problem of an SIR Model with Random Inputs Based on a Generalized Polynomial Chaos Approach.
            <i>International Journal of Numerical Analysis and Modeling</i>. <i>19</i> (2-3).
            255-274.
         doi: