A, Domracheva V, and Gandandorj Siirev. “CARBON SORBENTS FROM MONGOLIAN BROWN COALS”. Proceedings of the Mongolian Academy of Sciences 52, no. 4 (August 15, 2017): 20–28. Accessed October 27, 2025. https://test.mongoliajol.info/PMAS/article/view/870.