@article{Hasan:2009:VSL,
 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.},
 note = {SIGGRAPH Asia~'09},
 issue_date = {December 2009},
 volume = {28},
 issue = {5},
 month = {December},
 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},
}