@article{MM2_1992__77_2-3_155771,
     author = {Karsten Gro{\ss}e-Brauckmann},
     title = {Interior and boundary monotonicity formulas for stationary harmonic arts.},
     journal = {Manuscripta mathematica},
     pages = {89--96},
     publisher = {mathdoc},
     volume = {77},
     number = {2-3},
     year = {1992},
     zbl = {0779.58014},
     url = {http://geodesic.mathdoc.fr/item/MM2_1992__77_2-3_155771/}
}