ZHEREBTSOV, S.I.; SHPAKODRAEV, K.M.; VOTOLIN, K.S.; MALYSHENKO, N.V.; ISMAGILOV, Z.R. Structural-Group Composition and Biological Activity of Humic and Lipid Substances of Brown Coals. Eurasian Chemico-Technological Journal, [S. l.], v. 24, n. 3, p. 165–172, 2022. DOI: 10.18321/ectj1429. Disponível em: https://ect-journal.kz/index.php/ectj/article/view/1429. Acesso em: 27 apr. 2024.