%0 Journal Article
%A S. M. Tashpulatov
%T Spectra of the energy operator of three-electron systems in the impurity Hubbard model. Second doublet state
%J Contemporary Mathematics. Fundamental Directions
%D 2019
%P 109-123
%V 65
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMFD_2019_65_1_a9/
%G ru
%F CMFD_2019_65_1_a9