On the existence, uniqueness and approximation of saddle-point problems arising from lagrangian multipliers
ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Tome 8 (1974) no. R2, p. 129-151
@article{M2AN_1974__8_2_129_0,
     author = {Brezzi, F.},
     title = {On the existence, uniqueness and approximation of saddle-point problems arising from lagrangian multipliers},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis - Mod\'elisation Math\'ematique et Analyse Num\'erique},
     publisher = {Dunod},
     volume = {8},
     number = {R2},
     year = {1974},
     pages = {129-151},
     zbl = {0338.90047},
     mrnumber = {365287},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1974__8_2_129_0}
}
Brezzi, F. On the existence, uniqueness and approximation of saddle-point problems arising from lagrangian multipliers. ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Tome 8 (1974) no. R2, pp. 129-151. http://www.numdam.org/item/M2AN_1974__8_2_129_0/

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