1. Sobolev Spaces;Adams,2003
2. Error estimates for finite element methods for second order hyperbolic equations;Baker;SIAM J. Numer. Anal.,1976
3. The Mathematical Theory of Finite Element Methods;Brenner,2002
4. Structure Theory of Superconvergence of Finite Elements;Chen,2001
5. Dynamics of Structures;Clough,1993