@article{Ragan-Kelley:2007:Lightspeed,
 author = {Jonathan Ragan-Kelley and Charlie Kilpatrick and Brian W. 
   Smith and Doug Epps and Paul Green and Christophe Hery and Fr\'edo 
   Durand},
 title = {The Lightspeed Automatic Interactive Lighting Preview System},
 journal = {ACM Transactions on Graphics (Proc. SIGGRAPH)},
 volume = {26},
 number = {3},
 month = "July",
 year = {2007},
 doi = {http://doi.acm.org/10.1145/1276377.1276409},
 location = {San Diego, California, United States},
 publisher = {ACM Press},
 address = "New York, NY, USA",
}