@article{CMH_1968__43_139367,
     author = {Willi Bucher},
     title = {Diff\'erentiabilit\'e de la composition et compl\'etitude de certains espaces fonctionnels.},
     journal = {Commentarii mathematici Helvetici},
     pages = {256--288},
     publisher = {mathdoc},
     volume = {43},
     year = {1968},
     zbl = {0185.22003},
     url = {http://geodesic.mathdoc.fr/item/CMH_1968__43_139367/}
}