@article{GDZPPN002327694,
title = {A Lie Group Structure for Pseudodifferential Operators.},
journal = {Mathematische Annalen},
volume = {270},
year = {1985},
pages = {529-552},
zbl = {0587.58047},
url = {http://dml.mathdoc.fr/item/GDZPPN002327694}
}
Adams, Malcolm; Ratiu, Tudor.; Schmid, Rudolf. A Lie Group Structure for Pseudodifferential Operators.. Mathematische Annalen, Tome 270 (1985) pp. 529-552. http://gdmltest.u-ga.fr/item/GDZPPN002327694/