Eckart Michaelsen Uwe Soergel Uwe Stilla Grouping Salient Scatterers in InSAR Data for Recognition of Industrial Buildings. 613-616 2002 ICPR (2) http://doi.ieeecomputersociety.org/10.1109/ICPR.2002.1048377 db/conf/icpr/icpr2002-2.html#MichaelsenSS02