Pierre Poulin, Karim Ratib, Marco Jacque. Sketching Shadows and Highlights to Position Lights. In Computer Graphics International. pages 56, 1997. [doi]
@inproceedings{PoulinRJ97,
title = {Sketching Shadows and Highlights to Position Lights},
author = {Pierre Poulin and Karim Ratib and Marco Jacque},
year = {1997},
url = {http://csdl.computer.org/comp/proceedings/cgi/1997/7825/00/78250056abs.htm},
researchr = {https://researchr.org/publication/PoulinRJ97},
cites = {0},
citedby = {0},
pages = {56},
booktitle = {Computer Graphics International},
}