On spectra of geometric operators on open manifolds and differentiable groupoids. Lauter, Robert; Nistor, Victor — 2001 Electronic Research Announcements of the American Mathematical Society [electronic only]
Pseudodifferential analysis on continuous family groupoids. Lauter, Robert; Monthubert, Bertrand; Nistor, Victor — 2000 Documenta Mathematica
On the geometry of Riemannian manifolds with a Lie structure at infinity. Ammann, Bernd; Lauter, Robert; Nistor, Victor — 2004 International Journal of Mathematics and Mathematical Sciences
Algebras of pseudodifferential operators on complete manifolds. Ammann, Bernd; Lauter, Robert; Nistor, Victor — 2003 Electronic Research Announcements of the American Mathematical Society [electronic only]