D-Modules and Microlocal Geometry: Proceedings of the International Conference on D-Modules and Microlocal Geometry held at the University of Lisbon (Portugal), October 29-November 2, 1990 (Reprint 2011.)

The microlocal point of view refers to the idea of working in the cotangent bundle to a manifold in order to understand local problems on the base manifold.

This approach has been successfully applied to linear partial differential equations and is now widely used in other fields such as singularity theory, complex analysis, and group representatio