The present volume contains the text of the invited talks delivered
at the Eighth International Conference on Recent Progress in
Many-Body Theories held at SchloB Seggau, Province of Styria,
Austria, during the period August 22-26, 1994. The pro ceedings of
the Fifth Conference (Oulu, Finland 1987), the Sixth Conference
(Arad, Israel 1989) and the Seventh Conference (Minneapolis, USA
1991) have been published. by Plenum as the first three volumes of... more...