Wagner, A. P. L.; Fontana, D. C.; Fraisse, C.; Weber, E. J.; Hasenack, H. Temporal Trends of Vegetation Indices on Pampa Grasslands in Brazil and Uruguay. PAB 2013, 48 (9), 1192-1200. https://doi.org/10.1590/S1678-3921.pab2013.v48.16008.