Andrew M. Ladd, Kostas E. Bekris, Guillaume Marceau, Algis Rudys, Dan S. Wallach, Lydia E. Kavraki: Using wireless Ethernet for localization. IROS 2002: 402-408.
Richard A. Becker, Ramon Caceres, Karrie Hanson, Sibren Isaacman, Ji Meng Loh, Margaret Martonosi, James Rowland, Simon Urbanek, Alexander Varshavsky, Chris Volinsky: Human mobility characterization from cellular network data, CACM 56(1): 74-82 (2013).