Loss, A., M. G. Pereira, A. Perin, S. J. Beutler, and L. H. C. dos Anjos. “Oxidizable Carbon and Humic Substances in Rotation Systems With brachiaria/livestock and Pearl millet/No Livestock in the Brazilian Cerrado”. Spanish Journal of Agricultural Research, Vol. 11, no. 1, Feb. 2013, pp. 217-31, doi:10.5424/sjar/2013111-3416.