Мурадов, И., and И. Файзуллаев. “АТМОСФЕРА ҲАВОСИНИНГ ИФЛОСЛАНИШИ МУАММОСИ”. RESEARCH AND EDUCATION, vol. 2, no. 9, Sept. 2023, pp. 60-65, https://researchedu.org/index.php/re/article/view/4795.