1. (1) Kanbayashi, K. et al., Development of an Active Vertical Vibration Control System for High Speed Railway Vehicles, Proceedings of the Jointed Railway Technology Symposium '98 (J-Rail98), (1998-11), pp. 499-502, (in Japanese).
2. (2) Sugahara, Y. et al., Running Test of Vertical Semi-Active Suspension for Railway Vehicle, Proceedings of the Jointed Railway Technology Symposium '02 (J-Rail 2002), (2002-11), pp. 155-158, (in Japanese).
3. (3) Kanbayashi, K. et al., Development of the Active Vibration Control Systems for Very High Speed Railway Vehicles, Proceedings of the 6th Transportation and Logistics Conference, No. 97-12 (1997-7), pp. 73-76, (in Japanese).
4. (4) Koyanagi, S., The Development of the Air Spring with Variable Nozzle, Quarterly Report of RTRI, Vol. 31, No. 3 (1990-8), pp. 122-127, ISSN 0033-9008
5. (5) D. Karnopp, et al., Vibration Control Using Semi-Active Force Generators, Transaction of the American Society of Mechanical Engineers, Journal of Engineering for Industry, (1974-5), pp. 619-626.