<XML><RECORDS><RECORD><REFERENCE_TYPE>0</REFERENCE_TYPE><REFNUM>6884</REFNUM><AUTHORS><AUTHOR>van Rijsbergen,C.J.</AUTHOR></AUTHORS><YEAR>1977</YEAR><TITLE>A theoretical basis for the use of co-occurrence data in information retrieval</TITLE><PLACE_PUBLISHED> Journal of Documentation, 33 </PLACE_PUBLISHED><PUBLISHER>N/A</PUBLISHER><PAGES>106-119</PAGES><LABEL>van Rijsbergen:1977:6884</LABEL><ABSTRACT> </ABSTRACT></RECORD></RECORDS></XML>