Yamaguchi, T. , Watanabe, M. , Sasajima, M. , Yuan, C. , Maruyama, S. , Ibrahim, T. , Tomita, H.. "Nonlinear Impact Responses for a Damped Frame Supported by Nonlinear Springs with Hysteresis Using Fast FEA". World Academy of Science, Engineering and Technology, Open Science Index 94, International Journal of Mechanical and Mechatronics Engineering, (2014), 8(10), 1808 - 1815.