TY  - JOUR
AU  - Jan Boman
TI  - Differentiability of a Function and of its Compositions with Functions of One Variable.
JO  - Mathematica Scandinavica
PY  - 1967
SP  - 249
EP  - 268
VL  - 20
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MS2_1967__20_165995/
ID  - MS2_1967__20_165995
ER  -