Tejas Ashwin Laxmeshwar, Dr. Shivakant Upadhyaya. “An Analysis of Critical Factors Influencing the Supply, Logistics and Distribution of Covishield and Covaxin Vaccines”. Design Engineering (August 19, 2021): 9697 - 9710. Accessed May 4, 2024. http://www.thedesignengineering.com/index.php/DE/article/view/3547.