Accurate GSM Indoor Localization. - Veljo Otsason; Alex Varshavsky; Anthony LaMarca; Eyal de Lara (UbiComp, 2005)

GSM indoor localization. - Alex Varshavsky; Eyal de Lara; Jeffrey Hightower; Anthony LaMarca; Veljo Otsason (Pervasive Mob. Comput., 2007)