%0 Journal Article
%T Birkhoff normal forms for Fourier integral operators II
%A A. Iantchenko
%A J. Sjoestrand
%J Physics
%D 2001
%I arXiv
%X In this work we construct logarithms and Birkhoff normal forms for elliptic Fourier integral operators in the semi-classical limit under more general assumptions than in aprevious work by the first author. The methods are similar but slightly different.
%U http://arxiv.org/abs/math/0111134v1