1. The finite element method with Lagrangian multipliers;Babuška;Numer. Math.,1973
2. On the existence, uniqueness and approximation of saddle-point problems arising from Lagrangian multipliers;Brezzi;RAIRO. Anal. Numér.,1974
3. Navier-Stokes equations using mixed interpolation;Hood,1974
4. A stable finite element for the Stokes equations;Arnold;Calcolo,1984
5. Finite Element Methods for Flow Problems;Donea,2003