%0 Journal Article
%A Battaia, Luciano
%T A principle involving the variation of the metric tensor in a stationary space-time of general relativity
%J Rendiconti del Seminario Matematico della Università di Padova
%D 1976
%P 139-145
%V 56
%I Seminario Matematico of the University of Padua
%U http://archive.numdam.org/item/RSMUP_1976__56__139_0/
%G en
%F RSMUP_1976__56__139_0