@article{MZ_1970__113_171258,
     author = {Erhard Heinz},
     title = {\"Uber das {Randverhalten} quasilinearer elliptischer {Systeme} mit isothermen {Parametern.}},
     journal = {Mathematische Zeitschrift},
     pages = {99--105},
     publisher = {mathdoc},
     volume = {113},
     year = {1970},
     zbl = {0176.41004},
     url = {http://geodesic.mathdoc.fr/item/MZ_1970__113_171258/}
}