Rene Mayrhofer Stephan Winkler Helmut Hlavacs Michael Affenzeller Stefan Schneider On Structural Identification of 2D Regression Functions for Indoor Bluetooth Localization. 801-808 2009 EUROCAST http://dx.doi.org/10.1007/978-3-642-04772-5_103 conf/eurocast/2009 db/conf/eurocast/eurocast2009.html#MayrhoferWHAS09