Jianhui Yue Global Backfilling Scheduling in Multiclusters. 232-239 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3285&spage=232 2004 conf/aacc/2004 AACC db/conf/aacc/aacc2004.html#Yue04