%0 Journal Article
%A A. O. Bagapsh
%T Perturbation method for strongly elliptic second order systems with constant coefficients
%J Ufa mathematical journal
%D 2023
%P 21-30
%V 15
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/UFA_2023_15_4_a1/
%G en
%F UFA_2023_15_4_a1