@TechReport{Kern09,
  author =	 "Carsten Kern",
  title =	 "Learning Communicating and Nondeterministic Automata",
  institution =	 "RWTH Aachen",
  year =	 "2009",
  number =	 "AIB-2009-17",
  month =	 sept,
  url =          "http://aib.informatik.rwth-aachen.de/2009/2009-17.pdf",
}