1. Assistant Professor, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong; formerly, Research Fellow, School of Construction Management and Engineering, Univ. of Reading, Whiteknights, P.O. Box 219, Reading RG6 6AW, U.K.
2. Professor, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Hong Kong.
3. Associate Professor, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong.