1. Engineer, Totten Sims Hubicki Associates, 240 Terence Mathews Crescent, Ottawa ON, Canada K2M 2C4.
2. Assistant Research Professor, Univ. of Nevada, Reno, MS 258, Reno, NV 89557.
3. Professor, Univ. of Canterbury, Dept. of Civil Engineering, Christchurch 8020, New Zealand.