Larson, Gregory W, Holly Rushmeier, and Christine Paitko. A Visibility Matching Tone Reproduction Operator for High Dynamic Range Scenes. 1997.PDF
Rushmeier, Holly, Gregory J Ward, Christine Paitko, Phil Sanders, and Bert W Rust. "Comparing Real and Synthetic Images: Some Ideas about Metrics." 6th Eurographics Workshop on Rendering. Dublin, Ireland, 1995.PDF