@article{MZ_1964__84_170268,
     author = {Wolfgang Eichhorn},
     title = {Verallgemeinerte {Cauchy-Riemannsche} und {Laplacesche} {Differntialgleichungen.}},
     journal = {Mathematische Zeitschrift},
     pages = {279--293},
     publisher = {mathdoc},
     volume = {84},
     year = {1964},
     zbl = {0147.08004},
     url = {http://geodesic.mathdoc.fr/item/MZ_1964__84_170268/}
}