@article {1189, title = {Smartphone-Based Indoor Localization within a 13th Century Historic Building}, journal = {Sensors}, volume = {18}, year = {2018}, month = {12/2018}, chapter = {4095}, doi = {10.3390/s18124095}, author = {Fetzer, Toni and Ebner, Frank and Bullmann, Markus and Deinzer, Frank and Grzegorzek, Marcin} }