MODIFICATION OF HUMIC SUBSTANCES FOR DEVELOPMENT OF MATERIALS FOR ENVIRONMENTAL TECHNOLOGIES. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 1, p. 101–104, 2019. DOI: 10.17770/etr2019vol1.4123. Disponível em: https://archive-journals.rtu.lv/etr/article/view/4237.. Acesso em: 11 mar. 2026.