Moreira, A. et al. 2002. Efficiency of phosphorus sources and rates for alfalfa and centrosema cultivated in an Yellow Latosol (Oxisol). Pesquisa Agropecuaria Brasileira. 37, 10 (Oct. 2002), 1459–1466. DOI:https://doi.org/10.1590/S1678-3921.pab2002.v37.6490.