Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1956__64_169566, author = {John de Groot}, title = {A {System} of {Continuous,} {Mutually} {Non-differentiable} {Functions.}}, journal = {Mathematische Zeitschrift}, pages = {192--194}, publisher = {mathdoc}, volume = {64}, year = {1956}, zbl = {0070.05603}, url = {http://geodesic.mathdoc.fr/item/MZ_1956__64_169566/} }
John de Groot. A System of Continuous, Mutually Non-differentiable Functions.. Mathematische Zeitschrift, Tome 64 (1956), pp. 192-194. http://geodesic.mathdoc.fr/item/MZ_1956__64_169566/