@article{MM2_1975__15_154318,
     author = {K. Reichard},
     title = {Nichtdifferenzierbare {Morphismen} differenzierbarer {R\"aume.}},
     journal = {Manuscripta mathematica},
     pages = {243--250},
     publisher = {mathdoc},
     volume = {15},
     year = {1975},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MM2_1975__15_154318/}
}