EFREMOV, S. A.; NECHIPURENKO, S. V.; KAZANKAPOVA, M. K.; WASHINGTON, W.; TASSIBEKOV, Kh. S.; NAURYZBAEV, M. K. Physico-Chemical Characteristics of Shungite Rock of Kazakhstan. Eurasian Chemico-Technological Journal, [S. l.], v. 15, n. 3, p. 241–249, 2013. DOI: 10.18321/ectj228. Disponível em: https://ect-journal.kz/index.php/ectj/article/view/334. Acesso em: 22 nov. 2024.