@article{GDZPPN002225336,
title = {Counter-Examples to Boundary Estimates for Two-Dimensional Elliptic Systems.},
journal = {Manuscripta mathematica},
volume = {43},
year = {1983},
pages = {59-70},
zbl = {0522.35038},
url = {http://dml.mathdoc.fr/item/GDZPPN002225336}
}
Meier, Michael. Counter-Examples to Boundary Estimates for Two-Dimensional Elliptic Systems.. Manuscripta mathematica, Tome 43 (1983) pp. 59-70. http://gdmltest.u-ga.fr/item/GDZPPN002225336/