1. Ph.D. Candidate, Dept. of Construction Management, Curtin Univ. of Technology, GPO Box 1987, Perth, WA 6845, Australia.
2. School of Built Environment, Curtin Univ. of Technology, GPO Box 1987, Perth, WA 6845, Australia.
3. Professor, The Business School, Birmingham City Univ., perry Barr, Brimingham, B42 2SU, U.K.