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\bibitem{SophiaB.Liu_etal2008} Sophia B. Liu, Leysia Palen, Jeannette N. Sutton, Amanda L. Hughes, \& Sara Vieweg. (2008). In search of the bigger picture: The emergent role of on-line photo sharing in times of disaster. In B. V. de W. F. Fiedrich (Ed.), \textit{Proceedings of ISCRAM 2008 -- 5th International Conference on Information Systems for Crisis Response and Management} (pp. 140--149). Washington, DC: Information Systems for Crisis Response and Management, ISCRAM.

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