Sousa, J. C. de, Conrad, J. H., Blue, W. G., Ammerman, C. B., & McDowell, L. R. (2014). Interrelationships among mineral levels in soil, forage, and animal tissues 3. Manganese, iron, and cobalt. Pesquisa Agropecuaria Brasileira, 16(5), 739–746. https://doi.org/10.1590/S1678-3921.pab1981.v16.17074