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Radil, Steven M., Flint, Colin and Tita, George E. 2010. Spatializing Social Networks: Using Social Network Analysis to Investigate Geographies of Gang Rivalry, Territoriality, and Violence in Los Angeles. Annals of the Association of American Geographers, 100(2)(April), 307-326.
http://www.informaworld.com/smpp/content~db=all~content=a919728976