TY  - JOUR
AU  - Karl Menger
TI  - Rates of change and derivatives
JO  - Fundamenta Mathematicae
PY  - 1958
SP  - 89
EP  - 102
VL  - 46
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-46-1-89-102/
DO  - 10.4064/fm-46-1-89-102
LA  - en
ID  - 10_4064_fm_46_1_89_102
ER  -