<XML><RECORDS><RECORD><REFERENCE_TYPE>3</REFERENCE_TYPE><REFNUM>5618</REFNUM><AUTHORS><AUTHOR>Van Rijsbergen,C.J.</AUTHOR></AUTHORS><YEAR>1998</YEAR><TITLE>Proceedings of the 21st Annual International ACM SIGIR Conference on Research & Development in Information Retrieval</TITLE><PLACE_PUBLISHED> Melbourne, </PLACE_PUBLISHED><PUBLISHER>N/A</PUBLISHER><PAGES>-</PAGES><LABEL>Van Rijsbergen:1998:5618</LABEL><ABSTRACT> </ABSTRACT></RECORD></RECORDS></XML>