Ahmed, Shaheer, Usama Waqar, Kantesh Kumar Lohana, and Daniyal Ali Khan. “A Bibliometric Analysis of Global COVID-19 Research”. National Journal of Health Sciences 5, no. 3 (March 30, 2021): 119-126. Accessed April 27, 2024. https://ojs.njhsciences.com/index.php/njhs/article/view/173.