1. Proc. 5th Wld Conf. Earthq. Engng, Sessions 5C, 6A and 7C, Rome, Italy (1973).
2. Proc. 6th Wld Conf. Earthq. Engng, Sessions 4 and 8, New Delhi (1977).
3. and , ‘Earthquake response and earthquake resistant design of long span suspension bridges’, Proc. 3rd Wld Conf. Earthq. Engng, New Zealand, 3 IV-312 (1965).
4. and , ‘Seismic response analysis of long-span suspension bridge tower and pier system’, Proc. 6th Wld Conf. Earthq. Engng, New Delhi, India (1977).