@TechReport{FischerKuhn.93,
  AUTHOR = {Klaus Fischer and Norbert Kuhn},
  TITLE = {A {DAI} Approach to modeling the Transportation Domain},
  YEAR = 1993,
  type = {Research Report},
  number = {RR-93-25},
  address = {Stuhlsatzenhausweg 3, D-66123 Saarbrücken, Germany},
  institution = {Deutsches Forschungszentrum für Künstliche Intelligenz},
}

@Book{Peek.95,
  Author = {Jerry Peek},
  Title = {{MH} and xmh: Email for Users and Programmers},
  Year = 1995,
  Month = apr,
  Publisher = {O'Reilly and Associates},
  Note = {Electronic version available at http://www.ics.uci.edu/~mh/book/}
}

@Book{Lindenmayer:90,
   AUTHOR = {Przemyslaw Prusinkiewicz and Aristid Lindenmayer},
   TITLE = {The Algorithmic Beauty of Plants},
   PUBLISHER = {Springer-Verlag},
   ADDRESS = {New York-Heidelberg-Berlin},
   YEAR = {1990}
}
