Boxiang Xiao Qiang Zhang Xiaopeng Wei A NURBS Facial Model Based on MPEG-4. 491-495 2006 conf/icat/2006w ICAT Workshops http://doi.ieeecomputersociety.org/10.1109/ICAT.2006.22 db/conf/icat/icat2006w.html#XiaoZW06