Rainer Kuhlen Marc Rittberger Bernard Bekavac Information Retrieval in a Regional, Distributed Information Area. 1996 conf/nir/1996 Networked Information Retrieval http://SunSITE.Informatik.RWTH-Aachen.DE/Publications/CEUR-WS/Vol-7/bekavac.ps db/conf/nir/nir1996.html#KuhlenRB96