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Beauval C., Yepes H., Bakun W.H., Egred J., Alvarado A., Singaucho J.C., 2010. Locations and magnitudes of historical earthquakes in the Sierra of Ecuador (1587-1996). Geophysical Journal International, 181, 1613-1633. https://doi.org/10.1111/j.1365-246X.2010.04569.x