@article{MZ_1973__133_171950,
     author = {Claus Gerhardt},
     title = {Hypersurfaces of {Prescribed} {Mean} {Curvature} over {Obstacles.}},
     journal = {Mathematische Zeitschrift},
     pages = {169--186},
     publisher = {mathdoc},
     volume = {133},
     year = {1973},
     zbl = {0265.35027},
     url = {http://geodesic.mathdoc.fr/item/MZ_1973__133_171950/}
}