%0 Journal Article
%A A. N. Vasil'ev
%A A. K. Kazanskii
%T Convexity properties of Legendre transformations (variational methods in quantum field theory)
%J Teoretičeskaâ i matematičeskaâ fizika
%D 1973
%P 43-58
%V 15
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_1973_15_1_a2/
%G ru
%F TMF_1973_15_1_a2