@article{MM2_1992__77_2-3_155765,
     author = {Friedmar Schulz},
     title = {Boundary {Regulartiy} for certain quasilinear elliptic systems of divergence structure.},
     journal = {Manuscripta mathematica},
     pages = {1--16},
     year = {1992},
     volume = {77},
     number = {2-3},
     zbl = {0777.35016},
     url = {http://geodesic.mathdoc.fr/item/MM2_1992__77_2-3_155765/}
}