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Castro, Roberto. "El clásico por los caminos del Perú" [The Classic throughout the paths of Peru]. website (in Spanish). DeChalaca. Archived from the original on 19 July 2009. Retrieved 30 August 2009.
Castro, Roberto (14 April 2011). "Escape a La Victoria" (in Spanish). dechalaca.com. Archived from the original on 5 March 2016. Retrieved 26 February 2012.