Soares, Wilson Vieira, Edson Lobato, Djalma Martinhão Gomes de Sousa, and Thomaz Adolpho Rein. 2000. “Evaluation of a Coarse-Ground Gafsa Rock Phosphate in the Recuperation of a Degraded Pasture on a Clayey Dark-Red Latosol”. Pesquisa Agropecuaria Brasileira 35 (4):819-25. https://doi.org/10.1590/S1678-3921.pab2000.v35.5834.