Tserenpil, Shurkhuu, Xing Jung Fan, Atindra Sapkota, Enkhmaa Chinzorig, Jian Zhong Song, and Cong Qiang Liu. “High Molecular Weight Humic-Like Substances in Carboneous Aerosol of Ulaanbaatar City”. Mongolian Journal of Chemistry 19, no. 45 (December 28, 2018): 5–11. Accessed April 26, 2024. https://www.mongoliajol.info/index.php/MJC/article/view/1083.