@TechReport{vonderMassen06,
  author = "Danilo Beuche, Andreas Birk, Heinrich Dreier, Andreas Fleischmann, Heidi Galle, Gerald Heller, Dirk Janzen, Isabel John, Ramin Tavakoli Kolagari, Thomas von der Maßen, Andreas Wolfram",
  title = "Report of the GI Work Group Requirements Management Tools for Product Line Engineering",
  institution = "RWTH Aachen",
  year = "2006",
  number = "AIB-2006-14",
  month = dec,
  url = "http://aib.informatik.rwth-aachen.de/2006/2006-14.ps.gz",
}