1. Chouw, N., Hao, H. Effect of simultaneous spatial near-source ground excitation and soil on the pounding response of bridge girders. Journal of Applied Mechanics 6: 779-788, (2003).
2. Chouw, N., Hao, H. Investigation of soil-structure inter-action and near-source ground motion spatial variation ef-fect on pounding of bridge girders. Proceedings of the 11th int. conf. on Soil Dynamics and Earthquake Engineering, UC Berkeley, 2: 726-733, (2004).
3. Caltrans Seismic Design Criteria. 9. Design manual-version 1. 1 California Dept. of Transportation, Sacramento, Cali-fornia, (1999).
4. Hao, H. Effect of spatial variation of ground motions on large multiple-supported structures. UCB-EERC 89/06, UC Berkeley, (1989).
5. Hao, H., Deeks, A. Displacement response of bridge decks subjected to spatial ground motion and pounding. Proceedings of the int. conf. on protection of structures against hazards, Singapore, 175-182, (2002).