1. 1) KOBORI T. Earthquake Response of a Frame Structures Composed of Inelastic Members. Proc. of the 5th World Conference on Earthquake Engineering. (1973) vol.1, p.1772-1781.
2. 2) ANDERSON J. C. Effects of Gravity Loads and Vertical Ground Acceleration on the Seismic Response of Multistory Frames. Proc. of the 5th World Conference on Earthquake Engineering. (1973) vol.1, p.2914-2923.