Significant modern papers on facial animation:
E. Chuang and C. Bregler. (2002). Performance driven facial animation using blendshapes interpolation. Technical Report CS-TR-2002-02, Stanford University.
Daniel Vlasic, Matthew Brand, Hanspeter Pfister, and Jovan Popovic. (2005). Face transfer with multilinear models. ACM Trans. Graph., 24, 3, 426–433.