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M. Müller, L. Telle, J. Lategahn, S. Gansemer, U. Großmann, and C. Röhrig, “Wireless Positioning Technologies—Comparison and Demonstration of WIFI Positioning and nanoLOC Self-Localization,” in Proceedings of the 12th Wireless Technology Congress, Düsseldorf: VDI-Verlag, 2010, pp. 348–357.