@Book{,
  title =         {The SIS project : software reuse with a natural language approach},
  publisher =     {Karlsruhe : Universitat Karlsruhe, Fakultat fur Informatik},
  year =          {1992},
  author =        {Prechelt, Lutz and Universität Karlsruhe. Fakultät für Informatik},
  series =        {Interner Bericht ; Nr.2/92},
  documenttype =  {TXT},
  hl =            {Edinburgh}
}