%0 Journal Article
%A V. N. Nefedov
%T Some necessary and some sufficient conditions for local extrema of polynomials and power series in two variables
%J Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences
%D 2024
%P 615-650
%V 28
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VSGTU_2024_28_4_a0/
%G ru
%F VSGTU_2024_28_4_a0