SHOVKUN, O. O.; POPIRNY, M. A. Quality of humus substances in sod-podzolic soil under different fertilization systems. AgroChemistry and Soil Science, [S. l.], v. 97, p. 53–60, 2024. DOI: 10.31073/acss97-06. Disponível em: https://agrochemsoilsci.org/index.php/journal/article/view/214.. Acesso em: 16 jul. 2026.