@TechReport{BlosteinSchuerr97,
  author =    {Dorothea Blostein and Andy Sch\"urr},
  title =     "Computing with {G}raphs and {G}raph {R}ewriting",
  institution = "RWTH Aachen",
  year =      "1997",
  number =    "AIB-08-1997",
  url =       "http://aib.informatik.rwth-aachen.de/1997/1997-08.ps.gz",
}