Portilho, Irzo Isaac Rosa, et al. “Invertebrate Fauna and Physical and Chemical Attributes of Soil under Integrated crop‑livestock Systems”. Pesquisa Agropecuaria Brasileira, vol. 46, no. 10, Jan. 2012, pp. 1310-2, doi:10.1590/S1678-3921.pab2011.v46.8530.