1. Amsden , A.A. Harlow , F.H. 1970 “The SMAC method: a numerical technique for calculating incompressible fluid flows,”
2. The finite element method with Lagrange multipliers,;Babuska;J. Numerical Mathematics,1973
3. A Taylor weak statement for hyperbolic conservation laws,;Baker;J. Numerical Methods Fluids,1987
4. On the existence, uniqueness and approximation for saddle-point problems arising from Lagrange multipliers,;Brezzi;RAIRO Anal. Numer.,1974