@article{MZ_1981__176_183634,
     author = {Michael Meier},
     title = {Liouville {Theorems} for {Nondiagonal} {Elliptic} {Systems} in {Arbitrary} {Dimensions.}},
     journal = {Mathematische Zeitschrift},
     pages = {123--134},
     publisher = {mathdoc},
     volume = {176},
     year = {1981},
     zbl = {0454.35034},
     url = {http://geodesic.mathdoc.fr/item/MZ_1981__176_183634/}
}