TY  - JOUR
AU  - V. N. Nefedov
TI  - Some necessary and some sufficient conditions for local extrema of polynomials and power series in two variables
JO  - Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences
PY  - 2024
SP  - 615
EP  - 650
VL  - 28
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VSGTU_2024_28_4_a0/
LA  - ru
ID  - VSGTU_2024_28_4_a0
ER  -