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\bibitem{906} Sergio Escalera, Oriol Pujol, \& Petia Radeva. (2007). Robust Complex Salient Regions. In \textit{3rd Iberian Conference on Pattern Recognition and Image Analysis (IbPRIA 2007), J. Marti et al. (Eds.) LNCS 4478:113{\textendash}121}.

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