1. S. Agmon,Lectures on Elliptic Boundary Value Problems. Van Nostrand, USA (1965).
2. Equilibrium finite elements for the linear elastic problem
3. PEERS: A new mixed finite element for plane elasticity
4. D.N. Arnold, R.S. Falk and R. Winther,Differential complexes and stability of finite element methods II: the elasticity complex, inCompatible Spatial Discretizations, D. Arnold, P. Botchev, R. Lehoucq, R. Nicolaides and M. Shashkov Eds.,IMA Volumes in Mathematics and its Applications142, Springer-Verlag (2005) 47–67.
5. Mixed finite element methods for linear elasticity with weakly imposed symmetry