<XML><RECORDS><RECORD><REFERENCE_TYPE>0</REFERENCE_TYPE><REFNUM>6895</REFNUM><AUTHORS><AUTHOR>Sparck Jones,K.</AUTHOR><AUTHOR>van Rijsbergen,C.J.</AUTHOR></AUTHORS><YEAR>1973</YEAR><TITLE>A test for the separation of relevant and non-relevant documents in experimental retrieval collections</TITLE><PLACE_PUBLISHED>Journal of Documentation, 29 </PLACE_PUBLISHED><PUBLISHER>N/A</PUBLISHER><PAGES>351-357</PAGES><LABEL>Sparck Jones:1973:6895</LABEL><ABSTRACT> </ABSTRACT></RECORD></RECORDS></XML>