@article{MAN_1988__280_3_164365,
     author = {Otto Liess},
     title = {The {Edge-of-Wedge} {Theorem} for {Systems} of {Constant} {Coefficient} {Partial} {Differential} {Operators.} {I.}},
     journal = {Mathematische Annalen},
     pages = {303--330},
     publisher = {mathdoc},
     volume = {280},
     number = {3},
     year = {1988},
     zbl = {0617.35096},
     url = {http://geodesic.mathdoc.fr/item/MAN_1988__280_3_164365/}
}