Yong Zhao Xinguo Liu Qunsheng Peng Hujun Bao Rigidity Constraints for Large Mesh Deformation. 47-55 2009 24 J. Comput. Sci. Technol. 1 http://dx.doi.org/10.1007/s11390-009-9213-8 db/journals/jcst/jcst24.html#ZhaoLPB09