Henan Zhao Rizos Sakellariou A Low-Cost Rescheduling Policy for Dependent Tasks on Grid Computing Systems. 21-31 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3165&spage=21 2004 conf/eagc/2004 European Across Grids Conference db/conf/eagc/eagc2004.html#ZhaoS04