1. Fujita, S., Fujita, T., Sasaki, Y., Fujimoto, S., Narikawa, N. and Tsuruya, C., Fundamental study of earthquake isolation systems suitable for building of industrial facilities (1st report, performance of earthquake isolation systems using hysteretic dampers), Transactions of the Japan Society of Mechanical Engineers, Series C, Vol.53, No.491 (1987), pp.1401-1409 (in Japanese).
2. Haniuda, N. and Aizawa, S., Control design of hydraulic active mass damper system and experimental verification on a small-scale model, Transactions of the Japan Society of Mechanical Engineers, Series C, Vol.61, No.583 (1995), pp.959-966 (in Japanese).
3. Harada, A., Vibration control of structures by adding virtually-semi-infinite structure using delayed feedback (about the equivalence of adding semi-infinite structure and sky-hook damper), Proceedings of the Dynamics and Design Conference 2013, USB (2013), Paper No.155 (in Japanese).
4. Harada, A., Resonance avoidance of lumped mass system by using delayed feedback based on continuum approximation, Proceedings of the Dynamics and Design Conference 2014, USB (2014), Paper No.320 (in Japanese).
5. Kageyama, M., Yasui, Y. and Seto, K., A study on optimum design of joint dampers connecting two towers (the case of connecting two same height towers at multiple points), Transactions of the Japan Society of Mechanical Engineers, Series C, Vol.65, No.630 (1999), pp.535-543 (in Japanese).