Tokura, A. M., Neto, A. E. F., Curi, N., Faquin, V., Kurihara, C. H., & Alovisi, A. A. (2002). Phosphorus forms on soil under no-till as a function of the depth and of cultivation time. Pesquisa Agropecuaria Brasileira, 37(10), 1467–1476. https://doi.org/10.1590/S1678-3921.pab2002.v37.6491