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
UR  - http://geodesic.mathdoc.fr/item/SM_1995_82_1_a2/
LA  - en
ID  - SM_1995_82_1_a2
ER  -