Smyth, T.J. and Bastos, J.B. 2014. Phosphorus fertilization for corn and cowpeas on a Typic Acrorthox in the humid tropics. Pesquisa Agropecuaria Brasileira. 20, 11 (Apr. 2014), 1259–1264. DOI:https://doi.org/10.1590/S1678-3921.pab1985.v20.16333.