TY  - JOUR
AU  - Jack Ceder
TI  - Differentiable roads for real functions
JO  - Fundamenta Mathematicae
PY  - 1969
SP  - 351
EP  - 358
VL  - 65
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-65-3-351-358/
DO  - 10.4064/fm-65-3-351-358
LA  - en
ID  - 10_4064_fm_65_3_351_358
ER  -