Arif, Abderrazak. “Effect of COVID-19 on the Ambient Air Pollution in Tunisia During 2020 and 2021 Years”. Journal of Community Medicine and Health Solutions 3, no. 1 (September 2, 2022): 054–059. Accessed September 16, 2025. https://www.hspioa.us/jcmhs/article/view/jcmhs-aid1020.