1. Basic error estimates for elliptic problems;Ciarlet,1991
2. An Introduction to the Mathematical Theory of Finite Elements;Oden,1976
3. Spectral methods in techniques of scientific computing (Part 2);Bernardi,1997
4. Spectral Methods in Fluid Dynamics;Canuto,1987
5. Numerical Analysis of Spectral Methods: Theory and Applications;Gottlieb,1977