1.
Efremov S, Nechipurenko S, Kazankapova M, Washington W, Tassibekov K, Nauryzbaev M. Physico-Chemical Characteristics of Shungite Rock of Kazakhstan. Eurasian Chem.-Technol. J. [Internet]. 25Jul.2013 [cited 28Jun.2022];15(3):241-9. Available from: https://ect-journal.kz/index.php/ectj/article/view/334