21.3. 本章小结# 21.3.1. 习题# 21.3.2. 参考文献# [SB12] Eftychios Sifakis and Jernej Barbic. Fem simulation of 3d deformable solids: a practitioner's guide to theory, discretization and model reduction. In Acm siggraph 2012 courses, pages 1–50. 2012.