<XML><RECORDS><RECORD><REFERENCE_TYPE>31</REFERENCE_TYPE><REFNUM>6557</REFNUM><AUTHORS><AUTHOR>van Helden,J.</AUTHOR><AUTHOR>Wernisch,L</AUTHOR><AUTHOR>Gilbert,D</AUTHOR><AUTHOR>Wodak,A</AUTHOR></AUTHORS><YEAR>2002</YEAR><TITLE>Graph-based analysis of metabolic networks</TITLE><PUBLISHER>N/A</PUBLISHER><LABEL>van Helden:2002:6557</LABEL></RECORD></RECORDS></XML>