@article{MAN_1982__261_182878,
     author = {Klas Diederich and Takeo Ohsawa},
     title = {A {Levi} {Problem} on {Two-Dimensional} {Complex} {Manifolds.}},
     journal = {Mathematische Annalen},
     pages = {255--262},
     publisher = {mathdoc},
     volume = {261},
     year = {1982},
     zbl = {0502.32010},
     url = {http://geodesic.mathdoc.fr/item/MAN_1982__261_182878/}
}