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\bibitem{M.Diaz_etal2014} M. Diaz, Dennys Paillacho, C. Angulo, O. Torres, J. Gonz{\'a}lalez, \& J. Albo Canals. (2014). A Week-long Study on Robot-Visitors Spatial Relationships during Guidance in a Sciences Museum. In \textit{ACM/IEEE International Conference on Human-Robot Interaction} (pp. 152--153).

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