@TechReport{BaaderKuesters-LTCS-99-13-1999,
  author =       {F.~Baader and R.~K{\"u}sters},
  title =        {Matching Concept Descriptions with Existential Restrictions Revisited},   
  institution =  {LuFG Theoretical Computer Science, RWTH Aachen},
  year =         1999,
  type =         {LTCS-Report},  
  number =       {LTCS-99-13},
  address =      {Germany},
  note =         {See http://www-lti.informatik.rwth-aachen.de/Forschung/Reports.html.}
}