@article{10.1109/TVCG.2012.152,
	author = {Rui Wang and Minghao Pan and Weifeng Chen and Zhong Ren and Kun Zhou and Wei Hua and Hujun Bao},
	title = {Analytic Double Product Integrals for All-Frequency Relighting},
	journal ={IEEE Transactions on Visualization and Computer Graphics},
	volume = {19},
	number = {7},
	issn = {1077-2626},
	year = {2013},
	pages = {1133-1142},
	doi = {http://doi.ieeecomputersociety.org/10.1109/TVCG.2012.152},
	publisher = {IEEE Computer Society},
	address = {Los Alamitos, CA, USA},
}