@inproceedings{Colbert:2007:RSF-Sketch,
 author = {Colbert, Mark and K{\v{r}}iv{\'{a}}nek, Jaroslav},
 title = {Real-time shading with filtered importance sampling},
 booktitle = {ACM SIGGRAPH 2007 sketches},
 series = {SIGGRAPH~'07},
 year = {2007},
 location = {San Diego, California},
 articleno = {71},
 url = {http://doi.acm.org/10.1145/1278780.1278866},
 doi = {10.1145/1278780.1278866},
 acmid = {1278866},
 publisher = {ACM},
 address = {New York, NY, USA},
}