@article{MZ_1918__2_167473,
     author = {K., Knopp},
     title = {Ein einfaches {Verfahren} zur {Bildung} stetiger nirgends differenzier-barer {Funktionen}},
     journal = {Mathematische Zeitschrift},
     pages = {1--26},
     publisher = {mathdoc},
     volume = {2},
     year = {1918},
     zbl = {46.0400.03},
     url = {http://geodesic.mathdoc.fr/item/MZ_1918__2_167473/}
}