<XML><RECORDS><RECORD><REFERENCE_TYPE>0</REFERENCE_TYPE><REFNUM>5894</REFNUM><AUTHORS><AUTHOR>Irving,R.W.</AUTHOR></AUTHORS><YEAR>1973</YEAR><TITLE>On a bound of Graham & Spencer for a graph-colouring constant</TITLE><PLACE_PUBLISHED>Journal of Combinatorial Theory (Series B) Volume No. 15 </PLACE_PUBLISHED><PUBLISHER>Academic Press</PUBLISHER><PAGES>200-203</PAGES><LABEL>Irving:1973:5894</LABEL><ABSTRACT> </ABSTRACT></RECORD></RECORDS></XML>