Cetin, Eyup, Serap Kiremitci, and Baris Kiremitci. 2020. “Developing Optimal Policies to Fight Pandemics and COVID-19 Combat in the United States”. European Journal of Pure and Applied Mathematics 13 (2):369-89. https://doi.org/10.29020/nybg.ejpam.v13i2.3700.