Guangming Li Jie Tian Mingchang Zhao Huiguang He Zhang Xiaopeng A New Mesh Simplification Algorithm Combining Half-Edge Data Structure with Modified Quadric Error Metric. 659-658 2002 ICPR (2) http://doi.ieeecomputersociety.org/10.1109/ICPR.2002.1048388 db/conf/icpr/icpr2002-2.html#GuangmingJMHX02