Balocchi, Oscar, et al. “Yield and Forage Mineral Composition of a Permanent Pasture Fertilized With Magnesium”. Pesquisa Agropecuaria Brasileira, vol. 36, no. 10, Oct. 2001, pp. 1309-17, doi:10.1590/S1678-3921.pab2001.v36.6261.