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\bibitem{Connors2003} Connors, M., Rostoker, G., Sofko, G., McPherron, R. L., \& Henderson, M. (2003). Ps 6 Disturbances: Relation to Substorms and the Auroral Oval. \textit{Annales Geophysicae}, \textit{21}, 493--508.

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