Kostylenko, Olena, Helena Sofia Rodrigues, and Delfim F. M. Torres. “The Risk of Contagion Spreading and Its Optimal Control in the Economy”. Statistics, Optimization & Information Computing 7, no. 3 (August 17, 2019): 578-587. Accessed November 22, 2024. http://iapress.org/index.php/soic/article/view/soic.20190905.