Trindade, J.P.P. et al. 2008. Grassland vegetation of sandy patches of Rio Grande do Sul under grazing and exclosure. Pesquisa Agropecuaria Brasileira. 43, 6 (Oct. 2008), 771–779. DOI:https://doi.org/10.1590/S1678-3921.pab2008.v43.120.