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\bibitem{Hu_etal2012} Hu, Z. - Z., Huang, B., Kinter, J. L., Wu, Z., \& Kumar, A. (2012). Connection of the stratospheric QBO with global atmospheric general circulation and tropical SST. Part II: interdecadal variations. \textit{Clim Dyn}, \textit{38}(1-2), 25--43.

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