@inproceedings{Purcell:2003:pmgpu,
 author = {Timothy J. Purcell, Craig Donner, Mike Cammarano, Henrik Wann Jensen, Pat Hanrahan},
 title = {Photon Mapping on Programmable Graphics Hardware},
 booktitle = {Proceedings of the ACM SIGGRAPH/Eurographics Symposium on Graphics Hardware},
 year = {2003},
 isbn = {1-58113-739-7},
 pages = {41--50},
 location = {San Diego, California},
 publisher = {Eurographics Association},
 }