@Article{LDB08:2008:CSL,
author = {Liu,, Xinguo and Dong,, Zhao and Bao,, Hujun and Peng,, Qunsheng},
title = {Caustic spot light for rendering caustics},
journal = {Vis. Comput.},
volume = {24},
number = {3},
year = {2008},
pages = {485--494},
publisher = {Springer-Verlag},
}