B, C., S. Ch, B. Ch, and Y. Matsumi. “CHARACTERISING SEASONAL VARIATIONS AND SPATIAL DISTRIBUTION OF AMBIENT PM2.5 CONCENTRATION BASED ON SHORT-TERM MONITORING IN DARKHAN CITY”. Proceedings of the Mongolian Academy of Sciences, vol. 58, no. 3, Oct. 2018, pp. 18-27, doi:10.5564/pmas.v58i3.1031.