1. Arbogast T, Chen Z. On the implementation of mixed methods as nonconforming methods for second order elliptic problems. Math Comp, 1995, 64: 943–972
2. Arnold D N. Differential complexes and numerical stability. In: Proceedings of the International Congress of Mathematicians, vol. 1. Beijing: Higher Education Press, 2002, 137–157
3. Arnold D N, Qin J. Quadratic velocity/linear pressure Stokes elements. In: Computer Methods for Partial Differential Equations, vol. VII. New Brunswick, NJ: IMACS, 1992, 28–34
4. Badia S, Codina R. Unified stabilized finite element formulations for the Stokes and the Darcy problems. SIAM J Numer Anal, 2009, 47: 1971–2000
5. Brenner S C, Scott L R. The Mathematical Theory of Finite Element Methods, 3rd ed. New York: Springer-Verlag, 2008