@TechReport{MEDUSA2nd,
  author =	 "Alexander Nyßen and Horst Lichter",
  title =	 "The MeDUSA Reference Manual, Second Edition",
  institution =	 "RWTH Aachen University",
  year =	 "2008",
  number =	 "AIB-2008-07",
  month =	 july,
  url =          "http://aib.informatik.rwth-aachen.de/2008/2008-07.pdf",
}