Naoto Maeda Toshio Tonouchi An Analysis Method for the Improvement of Reliability and Performance in Policy-Based Management Systems. 88-99 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3278&spage=88 2004 conf/dsom/2004 DSOM db/conf/dsom/dsom2004.html#MaedaT04