<?xml version="1.0" encoding="UTF-8"?>
<XML><RECORDS>
<RECORD>
	<REFERENCE_TYPE>0</REFERENCE_TYPE>
	<AUTHORS>
		<AUTHOR>Peters, R. D.</AUTHOR>
		<AUTHOR>Shepherd, J. A.</AUTHOR>
	</AUTHORS>
	<YEAR>1989</YEAR>
	<TITLE>A Pendulum with Adjustable Trends in the Period</TITLE>
	<SECONDARY_TITLE>American Journal of Physics</SECONDARY_TITLE>
	<VOLUME>57</VOLUME>
	<PAGES>535-539</PAGES>
</RECORD>
</RECORDS></XML>
