Kairbekov, Zh., Zh. Eshova, and Yu. Ryabikin. “Study of the Paramagnetic Properties of Brown Coal of the Кiyaktinsk Deposit”. Chemical Bulletin of Kazakh National University 61, no. 1 (March 30, 2011): 209-214. Accessed December 23, 2024. https://chemistry.kz/bulletin/index.php/kaznu/article/view/897.