@unpublished{TUW-263302, author = {Retscher, G{\"u}nther and Hofer, Hannes and Kealy, Allison and Gikas, Vassilis and Ettlinger, Andreas Franz and Obex, Franz}, title = {Constrained Differential Wi-Fi and UWB Measurements for Indoor Cooperative User Localization}, year = {2017}, note = {invited; talk: IAG-IASPEI Joint Scientific Assembly, Kobe, Japan; 2017-07-30 -- 2017-08-04} }