Yosuke Sugiyama Tomoya Enokido Makoto Takizawa Moderate Concurrency Control in Distributed Object Systems. 675-683 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3180&spage=675 2004 conf/dexa/2004 DEXA db/conf/dexa/dexa2004.html#SugiyamaET04