@TechReport{KuestersMolitor-LTCS-00-07,
  author =       {R.~K{\"u}sters and R.~Molitor},
  title =        {Computing Least Common Subsumers in ALEN},   
  institution =  {LuFG Theoretical Computer Science, RWTH Aachen},
  year =         2000,
  type =         {LTCS-Report},  
  number =       {00-07},
  address =      {Germany},
  note =         {See http://www-lti.informatik.rwth-aachen.de/Forschung/Reports.html.}
}