@article{Kanamori:2008,
 author = {Yoshihiro Kanamori and Zoltan Szego and Tomoyuki Nishita},
 title = {{GPU}-based Fast Ray Casting for a Large Number of Metaballs},
 journal = {Computer Graphics Forum (Proc. of Eurographics 2008)},
 pages = {351--360},
 volume = {27},
 number = {3},
 year = {2008}
}