Abdullah, Lazim, Harish Garg, Noor Azzah Awang, Herrini Mohd Pauzi, and Hazwani Hashim. “Non-Pharmaceutical Intervention Strategies to Respond to the COVID-19 Pandemic: Preference Ranking Method”. Operational Research in Engineering Sciences: Theory and Applications 5, no. 3 (October 5, 2022): 108–130. Accessed November 5, 2024. https://oresta.org/menu-script/index.php/oresta/article/view/341.