@ARTICLE{CaG99, 
 author = {Sommer, O. AND Dietz, A. AND Westermann, R. AND Ertl, T.},
 title = "{An Interactive Visualization and Navigation Tool for Medical Volume Data}",
 journal = {Computers \& Graphics},
 volume = 2,
 year = 1999,
 pages = {233--244},
}