Maurizio Gasperini
Ecole d'été de physique théorique (76th 2001 Les Houches, Haute-Savoie, France)
Andrea Cappelli
James Glimm
Bulgarian Workshop "New Trends in Quantum Field Theory" (2nd 1995 Razlog, Bulgaria)
I. L. Buchbinder
J.J. Brehm
Herwig Schopper
Stephen Myers
Brian Hatfield
József Fritz
G. Mussardo
Shi-Ju Ran
Anthony J. G. Hey
Jan Derezinski
Gérard G. Emch
Esteban A. Calzetta
Asia Pacific Workshop on High Energy Physics (1st 1987 Singapore)
Christian W. Fabjan
Workshop on Quantum Infrared Physics (1994 American University of Paris)