@inproceedings{1299642,
 author = {Mortensen, Jesper and Khanna, Pankaj and Yu, Insu and Slater, Mel},
 title = {A Visibility Field for Ray Tracing},
 booktitle = {CGIV '07: Proceedings of the Computer Graphics, Imaging and Visualisation},
 year = {2007},
 isbn = {0-7695-2928-3},
 pages = {54--61},
 doi = {http://dx.doi.org/10.1109/CGIV.2007.14},
 publisher = {IEEE Computer Society},
 address = {Washington, DC, USA},
 }