@article{MZ_1988__197_1_183735,
     author = {Otto Liess},
     title = {On the {Influence} of {Lower} {Order} {Terms} for {Propagation} of {Analytic} {Singularities} for {Operators} with {Constant} {Coefficients.}},
     journal = {Mathematische Zeitschrift},
     pages = {297--304},
     publisher = {mathdoc},
     volume = {197},
     number = {1},
     year = {1988},
     zbl = {0617.35023},
     url = {http://geodesic.mathdoc.fr/item/MZ_1988__197_1_183735/}
}