@unpublished{TUW-263312, author = {Retscher, G{\"u}nther}, title = {Research in the Field of Indoor Localization at TU Wien}, year = {2017}, note = {invited; talk: Guest Lecture at the School of Environment Science and Spatial Informatics of the Chinese University of Mining and Technologies (CUMT), Xuzhou, China; 2017-09-14} }