%0 Journal Article
%A Dragnev, Dragomir
%T On the Isoenergetical Non-Degeneracy of the Problem of two Centers of Gravitation
%J Serdica Mathematical Journal
%D 1997
%P 125-130
%V 23
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SMJ2_1997_23_2_a3/
%G en
%F SMJ2_1997_23_2_a3