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\bibitem{Vivanco2003} Vivanco, L. (2003). Calisto, his Falcon, and the Ape: The Iconography of the Sanguine in {\textquotedblleft}Celestina{\textquotedblright}. En A. D. Deyermond, \& J. Whetnall (Eds.), \textit{Proceedings of the Twelfth Colloquium} (pp. 89--100). London: Papers of the Medieval Hispanic Research Seminary.

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