@article{MAN_1979__245_163313,
     author = {Kimimasa Nishiwada},
     title = {Constant {Coefficient} {Differential} {Operators} with {Slowly} {Spreading} {Solutions.}},
     journal = {Mathematische Annalen},
     pages = {101--116},
     publisher = {mathdoc},
     volume = {245},
     year = {1979},
     zbl = {0422.35018},
     url = {http://geodesic.mathdoc.fr/item/MAN_1979__245_163313/}
}