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@article{MM2_1986__56_155179, author = {Friedrich Knop}, title = {\"Uber die {Glattheit} von {Quotientenabbildungen.}}, journal = {Manuscripta mathematica}, pages = {419--428}, publisher = {mathdoc}, volume = {56}, year = {1986}, language = {de}, url = {http://geodesic.mathdoc.fr/item/MM2_1986__56_155179/} }
Friedrich Knop. Über die Glattheit von Quotientenabbildungen.. Manuscripta mathematica, Tome 56 (1986), pp. 419-428. http://geodesic.mathdoc.fr/item/MM2_1986__56_155179/