@article{GDZPPN002328801,
title = {A Lie Group Structure for Fourier Integral Operators.},
journal = {Mathematische Annalen},
volume = {275},
year = {1986},
pages = {19-42},
zbl = {0619.58010},
url = {http://dml.mathdoc.fr/item/GDZPPN002328801}
}
Adams, Malcolm; Schmid, Rudolf; Ratiu, Tudor. A Lie Group Structure for Fourier Integral Operators.. Mathematische Annalen, Tome 275 (1986) pp. 19-42. http://gdmltest.u-ga.fr/item/GDZPPN002328801/