Gokul Varadhan Shankar Krishnan Liangjun Zhang Dinesh Manocha Reliable implicit surface polygonization using visibility mapping. 211-221 2006 conf/sgp/2006 Symposium on Geometry Processing http://doi.acm.org/10.1145/1281957.1281984 db/conf/sgp/sgp2006.html#VaradhanKZM06