@article{GDZPPN002205521,
title = {A uniform boundary Harnack inequality on non-tangentially accessible domains.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {390},
year = {1988},
pages = {69-96},
zbl = {0644.31011},
url = {http://dml.mathdoc.fr/item/GDZPPN002205521}
}
Wittmann, Rainer. A uniform boundary Harnack inequality on non-tangentially accessible domains.. Journal für die reine und angewandte Mathematik, Tome 390 (1988) pp. 69-96. http://gdmltest.u-ga.fr/item/GDZPPN002205521/