Reong, Samuel, Yu-Lin Hsiao, and Hu-Ming Wee. “A Short Note for Vaccine Cold Chain Network Models”. RSF Conference Series: Business, Management and Social Sciences 2, no. 1 (April 21, 2022): 78–87. Accessed July 16, 2024. https://proceeding.researchsynergypress.com/index.php/rsfconferenceseries1/article/view/519.