@TechReport{JarkeJeusfeldSzczurko93,
  author =    "Matthias Jarke and Manfred A. Jeusfeld and Peter Szczurko",
  title =     "Three {A}spects of {I}ntelligent {C}ooperation in the {Q}uality {C}ycle",
  institution = "RWTH Aachen",
  year =      "1993",
  number =    "AIB-21-1993",
  url =       "http://aib.informatik.rwth-aachen.de/1993/1993-21.ps.gz",
}