Loss, A., M. G. Pereira, T. A. Bernini, N. P. Zatorre, and P. G. S. Wadt. “Soil Fertility and Organic Matter in Vertisol and Ultisol under Forest and Pasture Coverage”. Comunicata Scientiae, vol. 5, no. 1, Mar. 2014, pp. 1-10, doi:10.14295/cs.v5i1.406.