Bellaver, C., Gomes, P. C., & Fialho, E. T. (1991). Rock phosphate in swine diets formulated according to the available phosphorus. Pesquisa Agropecuaria Brasileira, 26(10), 1771–1776. https://doi.org/10.1590/S1678-3921.pab1991.v26.3524