@article{CMUC_1967_8_4_a6,
     author = {Kolom\'y, Josef and Zizler, V\'aclav E.},
     title = {Remarks on the differentiability of mappings in linear normed spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {691--704},
     year = {1967},
     volume = {8},
     number = {4},
     mrnumber = {0234279},
     zbl = {0169.18501},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1967_8_4_a6/}
}