DaeKyu Choi Hyunseung Choo Jong-Koo Park Cost Effective Location Management Scheme Based on Hierarchical Mobile IPv6. 144-154 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2668&spage=144 2003 conf/iccsa/2003-2 ICCSA (2) db/conf/iccsa/iccsa2003-2.html#ChoiCP03