Arno Formella, K. Müller. A Viewpoint-Dependent Approach to Ray Trace Free-Form Surfaces. Comput. Graph. Forum, 23(2):143-156, 2004. [doi]
@article{FormellaM04,
title = {A Viewpoint-Dependent Approach to Ray Trace Free-Form Surfaces},
author = {Arno Formella and K. Müller},
year = {2004},
url = {http://diglib.eg.org/EG/CGF/volume23/issue2/v23i2pp143-156_abstract.html},
tags = {systematic-approach},
researchr = {https://researchr.org/publication/FormellaM04},
cites = {0},
citedby = {0},
journal = {Comput. Graph. Forum},
volume = {23},
number = {2},
pages = {143-156},
}