Norbert Baumgartner Wolfgang Gottesheim Stefan Mitsch Werner Retschitzegger Wieland Schwinger "Same, Same but Different" A Survey on Duplicate Detection Methods for Situation Awareness. 1050-1068 2009 OTM Conferences (2) http://dx.doi.org/10.1007/978-3-642-05151-7_22 conf/otm/2009-2 db/conf/otm/otm2009-2.html#BaumgartnerGMRS09