Lopes, H.O. da S. et al. 2014. Biological availability of phosphorus from natural phosphates for bovines by the isotope dilution technique. Pesquisa Agropecuaria Brasileira. 25, 3 (Apr. 2014), 421–425. DOI:https://doi.org/10.1590/S1678-3921.pab1990.v25.13424.