Seben Junior, Getulio de Freitas, et al. “Physical Quality of an Oxisol under No-Tillage Subjected to Different Cropping Systems”. Pesquisa Agropecuaria Brasileira, vol. 51, no. 9, Oct. 2016, pp. 1568-74, doi:10.1590/S1678-3921.pab2016.v51.22455.