@article{ERAAMS_2003_09_a9,
     author = {Ammann, Bernd and Lauter, Robert and Nistor, Victor},
     title = {Algebras of pseudodifferential operators on complete manifolds},
     journal = {Electronic research announcements of the American Mathematical Society},
     pages = {80--87},
     publisher = {mathdoc},
     volume = {09},
     year = {2003},
     doi = {10.1090/S1079-6762-03-00114-8},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S1079-6762-03-00114-8/}
}