1. Partner and Principal Consultant, Opus International Consultants, P.O. Box 5848, Wellesley St., Auckland 1036, New Zealand.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Auckland, Private Bag 92-019, Auckland, New Zealand.
3. Associate Professor, Dept. of Mechanical Engineering, Univ. of Auckland, Private Bag 92–019, Auckland, New Zealand.