1. 1) The Honshu-Shikoku Bridge Authority: Wind resistance design code for the Honshu-Shikoku Bridge, (1976), Bridge and Offshore Engineering Association, April 1978 (in Japanese).
2. 2) The Honshu-Shikoku Bridge Authority: Wind tunnel test manual for Honshu-Shikoku Bridge, (1980), Bridge and Offshore Engineering Association, June 1980 (in Japanese).
3. 3) H. Yamaguchi, M. Tatsumi and T. Miyata: Gravitational stiffness in tortional oscillation of suspension bridges and its effect on natural frequency, Proceedings of Japan Society of Civil Engineers, No. 410, October 1989 (in Japanese).
4. 4) S. Komatsu, N. Nishimura: Thee-dimentional analysis of truss girders by the thin walled elastic beam theory, Proceedings of the Japan Society of Civil Engineers, No. 238, June 1965 (in Japanese).
5. 5) F. Bleich, et al.: The Mathematical Theory of Vibration in Suspension Bridges, Department of Commerce Bureau of Public Roads.