Byeong-Seok Shin Sukhyun Lim An Efficient Navigation Method for Virtual Endoscopy Using Volume Ray Casting. 60-69 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2659&spage=60 2003 conf/iccS/2003-3 International Conference on Computational Science db/conf/iccS/iccS2003-3.html#ShinL03