Table of Contents:
  • 25 years of Fourier integral operators / Victor Guillemin
  • Fourier integral operators I / Lars Hörmander
  • Fourier integral operators II / Johannes Jisse Duistermaat, Lars Hörmander
  • The spectral function of an elliptic operator / Lars Hörmander
  • The spectrum of positive elliptic operators and periodic bichacaracteristics / Jhoannes Jisse Duistermaat, Victor Guillemin.