G. Ragchaa, T. Enkhbat, and E. Lkhamsuren, “Arsenic and Heavy Metals Contamination of Soils Around Oyu Tolgoi and Tavan Tolgoi Mines, Located in The South Gobi Desert of Mongolia”, IJET, vol. 7, no. 2.23, pp. 260–262, Apr. 2018, doi: 10.14419/ijet.v7i2.23.11955.