@techreport{MeyerBeierleScheubrein92,
   AUTHOR = "G. Meyer and C. Beierle and R. Scheubrein",
   TITLE = "{Persistente Datenspeicherung in einer logischen Programmiersprache
             mit relationalen und deduktiven Datenbanken}",
   TYPE = "{IWBS Report 219}",
   INSTITUTION = "IBM Germany, Scientific Center,
                  Institute for Knowledge Based Systems",
   ADDRESS = {Stuttgart},
   YEAR = 1992 , month = "June"           }