Cosmological Solutions of Horava-Witten Theory
(1998)
Soliton solutions of M-theory on an orbifold
Physics Letters B Elsevier 425:1-2 (1998) 59-70
The Universe as a Domain Wall
(1998)
The Cosmology of M-Theory and Type II Superstrings
(1998)
The Ten-dimensional Effective Action of Strongly Coupled Heterotic String Theory
(1998)