Avdieieva, L., Makarenko, A., Turchyna, T. and Dekusha, H. (2025) “TRADITIONAL AND MODERN APPROACHES TO EXTRACTING LIGNITE-DERIVED HUMIC ACIDS”, European Science, 7(sge41-07), pp. 110–118. doi: 10.30890/2709-2313.2025-41-07-003.