@article{02100285,
title = {Boundary monotonicity formulae and applications to free boundary problems I: The elliptic case.},
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {2004},
year = {2004},
zbl = {1217.35217},
language = {en},
url = {http://dml.mathdoc.fr/item/02100285}
}
Weiss, Georg S. Boundary monotonicity formulae and applications to free boundary problems I: The elliptic case.. Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 2004 (2004) . http://gdmltest.u-ga.fr/item/02100285/