%0 Journal Article
%A M. Yu. Logachev
%T Investigation of gauge ambiguity by means of the theory of harmonic maps
%J Teoretičeskaâ i matematičeskaâ fizika
%D 1987
%P 412-421
%V 70
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_1987_70_3_a8/
%G ru
%F TMF_1987_70_3_a8