Recent developments are (meta)reviewed in the applications of Wigner
functions to describe the observed single particle spectra and two-particle
Bose-Einstein (or Hanbury Brown -- Twiss) correlations in high energy particle
and nuclear physics, with examples from hadron-proton and Pb + Pb collisions at
CERN SPS.Comment: 4 pages, invited talk at the Wigner Centennial Conference, Pecs,
Hungary, July 200