Dolmaa, G, GP Aleksandrova, MB Lesnichaya, B Nominsetseg, G Ganzaya, B Bayraa, BG Sukhov, D Regdel, and BA Trofimov. “Properties of Humic Substances Isolated from Different Natural Sources”. Mongolian Journal of Chemistry 14 (October 1, 2014): 51–56. Accessed October 27, 2025. https://test.mongoliajol.info/MJC/article/view/199.