Post inflationary behaviour of string moduli
Nuclear Physics B Elsevier 481:1-2 (1996) 433-452
Stabilizing dilaton and moduli vacua in string and M--Theory cosmology
(1996)
O(d, d) symmetry in quantum cosmology
Nuclear Physics B Elsevier 477:2 (1996) 549-563
Quark and lepton mass matrices from horizontal U(1) symmetry
Physics Letters B Elsevier 387:1 (1996) 99-106