@article{GDZPPN002416425, title = {Quotienten differenzierbarer R\"aume.}, journal = {Mathematische Zeitschrift}, volume = {142}, year = {1975}, pages = {19-28}, zbl = {0308.32019}, url = {http://dml.mathdoc.fr/item/GDZPPN002416425} }
Jung, Gerhard. Quotienten differenzierbarer Räume.. Mathematische Zeitschrift, Tome 142 (1975) pp. 19-28. http://gdmltest.u-ga.fr/item/GDZPPN002416425/