TY  - JOUR
AU  - Valentino Magnani
TI  - Differentiability from the representation formula and
 the Sobolev–Poincaré inequality
JO  - Studia Mathematica
PY  - 2005
SP  - 251
EP  - 272
VL  - 168
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm168-3-5/
DO  - 10.4064/sm168-3-5
LA  - en
ID  - 10_4064_sm168_3_5
ER  -