TY  - JOUR
AU  - A. I. Subbotin
TI  - On a~property of the subdifferential
JO  - Sbornik. Mathematics
PY  - 1993
SP  - 63
EP  - 78
VL  - 74
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1993_74_1_a5/
LA  - en
ID  - SM_1993_74_1_a5
ER  -