TY  - JOUR
AU  - J. Hoffmann-Jorgensen
TI  - On the Differentiability Points of a Function of Two Real Variables Admitting Partial Derivatives.
JO  - Mathematica Scandinavica
PY  - 1974
SP  - 259
EP  - 266
VL  - 35
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MS2_1974__35_166390/
ID  - MS2_1974__35_166390
ER  -