@TechReport{Dahmen02,
  author =	 "J\"org Dahmen",
  title =	 "Invariant Image Object Recognition using Gaussian Mixture Densities",
  institution =	 "RWTH Aachen",
  year =	 "2002",
  number =	 "AIB-07-2002",
  month =	 feb,
  url =          "http://aib.informatik.rwth-aachen.de/2002/2002-07.ps.gz",
}