S. Lodoysamba, D. Shagjjamba, and G. Gerelmaa. “Characterization of PM2.5 and PM10-2.5 Air Pollution of Ulaanbaatar City”. Scientific transaction of the National University of Mongolia. Physics 15, no. 309 (March 15, 2022): 1–4. Accessed November 23, 2024. https://journal.num.edu.mn/physics/article/view/251.