Rocha Façanha, Arnoldo, Anna Okorokova Lvovna Façanha, Fábio Lopes Olivares, Fernando Guridi, Gabriel de Araújo Santos, Ary Carlos Xavier Velloso, Victor Marcos Rumjanek, et al. “Humic Acids Bioactivity: Effects on Root Development and on the Plasma Membrane Proton Pump”. Pesquisa Agropecuaria Brasileira 37, no. 9 (September 1, 2002): 1301–1310. Accessed March 27, 2026. https://apct.sede.embrapa.br/pab/article/view/6470.