TY  - JOUR
AU  - S. V. Burtsev
TI  - Theorems on the~existence of an~implicit function in the~theory of necessary and sufficient conditions for an~extremum
JO  - Sbornik. Mathematics
PY  - 1995
SP  - 65
EP  - 85
VL  - 82
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1995_82_1_a2/
LA  - en
ID  - SM_1995_82_1_a2
ER  -