@article{MZ_1979__169_172877,
     author = {Friedmar Schulz},
     title = {Innere {Absch\"atzungen} f\"ur {L\"osungen} nichtlinearer elliptischer {Differentialgleichungen} zweiter {Ordnung} in n {Variablen.}},
     journal = {Mathematische Zeitschrift},
     pages = {13--22},
     publisher = {mathdoc},
     volume = {169},
     year = {1979},
     zbl = {0394.35039},
     url = {http://geodesic.mathdoc.fr/item/MZ_1979__169_172877/}
}