@article{Hasan:2009:VSL:1618452.1618489,
 author = {Ha\v{s}an, Milo\v{s} and K\v{r}iv\'{a}nek, Jaroslav and Walter, Bruce and Bala, Kavita},
 title = {Virtual spherical lights for many-light rendering of glossy scenes},
 journal = {ACM Trans. Graph.},
 issue_date = {December 2009},
 volume = {28},
 number = {5},
 month = dec,
 year = {2009},
 issn = {0730-0301},
 pages = {143:1--143:6},
 articleno = {143},
 numpages = {6},
 url = {http://doi.acm.org/10.1145/1618452.1618489},
 doi = {10.1145/1618452.1618489},
 acmid = {1618489},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {global illumination, glossy BRDF, many lights},
} 


@inproceedings{Hasan:2009:VSL:1661412.1618489,
 author = {Ha\v{s}an, Milo\v{s} and K\v{r}iv\'{a}nek, Jaroslav and Walter, Bruce and Bala, Kavita},
 title = {Virtual spherical lights for many-light rendering of glossy scenes},
 booktitle = {ACM SIGGRAPH Asia 2009 papers},
 series = {SIGGRAPH Asia '09},
 year = {2009},
 isbn = {978-1-60558-858-2},
 location = {Yokohama, Japan},
 pages = {143:1--143:6},
 articleno = {143},
 numpages = {6},
 url = {http://doi.acm.org/10.1145/1661412.1618489},
 doi = {10.1145/1661412.1618489},
 acmid = {1618489},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {global illumination, glossy BRDF, many lights},
}