@article{PMFA_1983_28_3_a1,
     author = {Preiss, David},
     title = {Nederivovateln\'e funkce},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {148--154},
     year = {1983},
     volume = {28},
     number = {3},
     mrnumber = {0710086},
     zbl = {0523.26007},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1983_28_3_a1/}
}