%0 Journal Article
%A V. A. Franke
%A V. Tcendrovskii
%T Alternative descriptions of physical systems based on perturbation theory
%J Teoretičeskaâ i matematičeskaâ fizika
%D 2014
%P 322-336
%V 181
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_2014_181_2_a5/
%G ru
%F TMF_2014_181_2_a5