Streck, N.A. et al. 2010. Linking rainfall variability in Santa Maria with the Pacific Decadal Oscillation. Pesquisa Agropecuaria Brasileira. 44, 12 (Dec. 2010), 1553–1561. DOI:https://doi.org/10.1590/S1678-3921.pab2009.v44.2905.