Superconvergence of the gradient of Galerkin approximations for elliptic problems
ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Volume 21 (1987) no. 4, p. 679-695
@article{M2AN_1987__21_4_679_0,
author = {Nakao, Mitsuhiro T.},
title = {Superconvergence of the gradient of Galerkin approximations for elliptic problems},
journal = {ESAIM: Mathematical Modelling and Numerical Analysis - Mod\'elisation Math\'ematique et Analyse Num\'erique},
publisher = {Dunod},
volume = {21},
number = {4},
year = {1987},
pages = {679-695},
zbl = {0642.65073},
mrnumber = {921833},
language = {en},
url = {http://www.numdam.org/item/M2AN_1987__21_4_679_0}
}

Nakao, Mitsuhiro T. Superconvergence of the gradient of Galerkin approximations for elliptic problems. ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Volume 21 (1987) no. 4, pp. 679-695. http://www.numdam.org/item/M2AN_1987__21_4_679_0/

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