Iksoo Kim Yoseop Woo Hyunchul Kang Backhyun Kim Jinsong Ouyang Layered Web-Caching Technique for VOD Services. 345-351 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3043&spage=345 2004 conf/iccsa/2004-1 ICCSA (1) db/conf/iccsa/iccsa2004-1.html#KimWKKO04