<XML><RECORDS><RECORD><REFERENCE_TYPE>3</REFERENCE_TYPE><REFNUM>6859</REFNUM><AUTHORS><AUTHOR>Morrissey,J.M.</AUTHOR><AUTHOR>van Rijsbergen,C.J.</AUTHOR></AUTHORS><YEAR>1987</YEAR><TITLE>A formal treatment of missing and imprecise information</TITLE><PLACE_PUBLISHED> Proceedings of the 10th ACM SIGIR Conference </PLACE_PUBLISHED><PUBLISHER>N/A</PUBLISHER><PAGES>149-156</PAGES><LABEL>Morrissey:1987:6859</LABEL><ABSTRACT> </ABSTRACT></RECORD></RECORDS></XML>