@article{01614303,
title = {Pointwise a posteriori error analysis for an adaptive penalty finite element method for the obstacle problem.},
journal = {Computational Methods in Applied Mathematics},
volume = {1},
year = {2001},
pages = {18-38},
zbl = {0980.65118},
language = {en},
url = {http://dml.mathdoc.fr/item/01614303}
}
French, Donald A.; Larsson, Stig; Nochetto, Ricardo H. Pointwise a posteriori error analysis for an adaptive penalty finite element method for the obstacle problem.. Computational Methods in Applied Mathematics, Tome 1 (2001) pp. 18-38. http://gdmltest.u-ga.fr/item/01614303/