@article{MZ_1975__145_172265,
     author = {Gerhard Jung},
     title = {Quotienten differenzierbarer {R\"aume.}},
     journal = {Mathematische Zeitschrift},
     pages = {19--28},
     publisher = {mathdoc},
     volume = {145},
     year = {1975},
     zbl = {0308.32019},
     url = {http://geodesic.mathdoc.fr/item/MZ_1975__145_172265/}
}