@article{GDZPPN002218828, title = {Nichtdifferenzierbare Morphismen differenzierbarer R\"aume.}, journal = {Manuscripta mathematica}, volume = {17}, year = {1975}, pages = {243-250}, language = {de}, url = {http://dml.mathdoc.fr/item/GDZPPN002218828} }
Reichard, K. Nichtdifferenzierbare Morphismen differenzierbarer Räume.. Manuscripta mathematica, Tome 17 (1975) pp. 243-250. http://gdmltest.u-ga.fr/item/GDZPPN002218828/