%0 Journal Article
%A Joshi, M.S.
%T Geometric proofs of composition theorems for generalized Fourier integral operators.
%J Portugaliae mathematica
%D 1999
%P 129-154
%V 56
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1999__56_2_48455/
%G en
%F PORMA_1999__56_2_48455