@article{MZ_1971__121_171545,
     author = {Kjell-Ove Widman},
     title = {Local {Bounds} for {Solutions} of {Higher} {Order} {Nonlinear} {Elliptic} {Partial} {Differential} {Equations.}},
     journal = {Mathematische Zeitschrift},
     pages = {81--95},
     publisher = {mathdoc},
     volume = {121},
     year = {1971},
     zbl = {0212.44902},
     url = {http://geodesic.mathdoc.fr/item/MZ_1971__121_171545/}
}