Approximation by finite element functions using local regularization
ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Tome 9 (1975) no. R2, p. 77-84
@article{M2AN_1975__9_2_77_0,
     author = {Cl\'ement, Ph.},
     title = {Approximation by finite element functions using local regularization},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis - Mod\'elisation Math\'ematique et Analyse Num\'erique},
     publisher = {Dunod},
     volume = {9},
     number = {R2},
     year = {1975},
     pages = {77-84},
     zbl = {0368.65008},
     mrnumber = {400739},
     language = {en},
     url = {http://http://www.numdam.org/item/M2AN_1975__9_2_77_0}
}
Clément, Ph. Approximation by finite element functions using local regularization. ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Tome 9 (1975) no. R2, pp. 77-84. http://www.numdam.org/item/M2AN_1975__9_2_77_0/

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