@TechReport{WRS04,
  author =       "Sergio Antoy and Yoshihito Toyama (eds.)",
  title =        "WRS'04 4th International Workshop on Reduction Strategies
  in
                  Rewriting and Programming",
  institution =  "RWTH Aachen",
  year =         "2004",
  number =       "AIB-2004-06",
  month =        jun,
  url =          "http://aib.informatik.rwth-aachen.de/2004/2004-06.ps.gz",
}