%0 Journal Article
%A V. V. Tolmachev
%T The shift of the branch point in the mass operator of formal perturbation theory for a nonideal Fermi--Dirac system
%J Doklady Akademii Nauk
%D 1961
%P 829-832
%V 141
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1961_141_4_a16/
%G ru
%F DAN_1961_141_4_a16