@misc{TigerAG,
  title =	 {Tiger in AG},
  author =	 {Arthur Baars},
  howpublished = {\url{http://www.cs.uu.nl/wiki/bin/view/HUT/TigerCompiler}}
}

@misc{swierstra.uuag,
  author =	 {S. D. Swierstra and Arthur Baars and Andres L\"oh},
  title =	 {The {UU-AG} Attribute Grammar System},
  year =	 {2003},
  howpublished = {\url{http://www.cs.uu.nl/wiki/bin/view/HUT/AttributeGrammarSystem}}
}
