Streck, Nereu Augusto, Galileo Adeli Buriol, Arno Bernardo Heldwein, Luana Fernandes Gabriel, and Gizelli Moiano De Paula. 2010. “Linking Rainfall Variability in Santa Maria With the Pacific Decadal Oscillation”. Pesquisa Agropecuaria Brasileira 44 (12):1553-61. https://doi.org/10.1590/S1678-3921.pab2009.v44.2905.