@article{MZ_1986__191_173708,
     author = {N. Adasch},
     title = {Der {Satz} \"uber offene {Abbildungen} in topologischen {Vektorr\"aumen.}},
     journal = {Mathematische Zeitschrift},
     pages = {645--648},
     publisher = {mathdoc},
     volume = {191},
     year = {1986},
     zbl = {0603.46006},
     url = {http://geodesic.mathdoc.fr/item/MZ_1986__191_173708/}
}