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\bibitem{Weijer_etal2013} Weijer, W., Zharkov, V., Nof, D., Dijkstra, H. A., de Ruijter, W. P. M., van Scheltinga, A. T., et al. (2013). Agulhas ring formation as a barotropic instability of the retroflection. \textit{Geophys. Res. Lett.}, \textit{40}(20), 5435--5438.

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