Seung-Lyeol Cha Thomas W. Green Chong-Ho Lee Cheong Youn The Hierarchical Federation Architecture for the Interoperability of ROK and US Simulations. 147-156 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3397&spage=147 2004 conf/ais/2004 AIS db/conf/ais/ais2004.html#ChaGLY04