KINETIC MIXING AND THE SUPERSYMMETRIC GAUGE HIERARCHY
Nucl.Phys.B 492 (1996) 104
Post inflationary behaviour of string moduli
NUCLEAR PHYSICS B 481:1-2 (1996) 433-452
REALIZING HIGHER LEVEL GAUGE SYMMETRIES IN STRING THEORY: NEW EMBEDDINGS FOR STRING GUTS
Nucl.Phys.B 479 (1996) 113-172
STRING UNIFICATION, HIGHER LEVEL GAUGE SYMMETRIES, AND EXOTIC HYPERCHARGE NORMALIZATIONS
Nucl.Phys.B 467 (1996) 44-99