1. The Finite Element Method for Elliptic Problems;Ciarlet,1978
2. Numerical Solution of Partial Differential Equations By the Finite Element Method;Johnson,1987
3. Computing with Hp-Adaptive Finite Elements. Volume I: One and Two Dimensional Elliptic and Maxwell Problems;Demkowicz,2006
4. The Mathematical Theory of Finite Element Methods;Brenner,2008
5. Higher-Order Finite Element Methods;Solin,2002