<XML><RECORDS><RECORD><REFERENCE_TYPE>0</REFERENCE_TYPE><REFNUM>6843</REFNUM><AUTHORS><AUTHOR>van Rijsbergen,C.J.</AUTHOR></AUTHORS><YEAR>1993</YEAR><TITLE>The state of information retrieval: logic and information</TITLE><PLACE_PUBLISHED>The Computer Bulletin, 5:1 </PLACE_PUBLISHED><PUBLISHER>N/A</PUBLISHER><PAGES>18-20</PAGES><LABEL>van Rijsbergen:1993:6843</LABEL><ABSTRACT> </ABSTRACT></RECORD></RECORDS></XML>