B. Greene
Behram Kurşunoğlu
Unknown Author
M. Tomiya
Johns Hopkins Workshop on Current Problems in Particle Theory. (13th 1989 Florence, Italy)
Lewes String Theory Workshop (1985)
Nr̥siṃhacaraṇa Paṇḍā
Croatia) Adriatic Meeting on Particle Physics (6th 1989 Dubrovnik
Warren Siegel
Workshop Phenomenological Aspects of Superstring Theories (PAST-97) (1997 Trieste, Italy)
John R. Gribbin
Igor Frenkel
International Superstring Workshop (3rd 1989 Texas A & M University)
André Roger LeClair
S. V. Ketov
Peter Van Nieuwenhuizen
S. W. Hawking
G. W. Gibbons
Xi Yin