SUN, Qian; LIU, Jianlong; HUO, Lianfei; LI, Yuncong C; LI, Xue; XIA, Liru; ZHOU, Zhongkai; ZHANG, Meina; LI, Bin. Humic acids derived from Leonardite to improve enzymatic activities and bioavailability of nutrients in a calcareous soil. International Journal of Agricultural and Biological Engineering, [S. l.], v. 13, n. 3, p. 200–205, 2020. Disponível em: https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/5660. Acesso em: 26 dec. 2025.