<?xml version="1.0" encoding="UTF-8"?>
<XML><RECORDS>
<RECORD>
	<REFERENCE_TYPE>0</REFERENCE_TYPE>
	<AUTHORS>
		<AUTHOR>Lawrence, Jim</AUTHOR>
	</AUTHORS>
	<YEAR>2006</YEAR>
	<TITLE>The odd-even invariant of an oriented matroid</TITLE>
	<SECONDARY_TITLE>European J. Combin. </SECONDARY_TITLE>
	<VOLUME>27</VOLUME>
	<PAGES>806--813</PAGES>
</RECORD>
</RECORDS></XML>