SUN, Yutong; XIA, Liheng. Research Progress on Activation and Modification Techniques of Humic Acid. International Journal of Agriculture and Food Sciences Research, [S. l.], v. 2, n. 1, p. 22–25, 2024. DOI: 10.62051/ijafsr.v2n1.05. Disponível em: https://wepub.org/index.php/IJAFSR/article/view/4459. Acesso em: 30 apr. 2026.