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"Yoshiki Sugahara,Akihito Kazato,Takahiro Tomioka,reiko koganei,MITSUJI SAMPEI","Vertical Vibration Suppression of Railway Vehicle by Primary and Secondary Suspension Damping Force Control","TRANSLOG 2007","Proceedings of the TRANSLOG 2007","The Japan Society of Mechanical Engineers",,,"pp. 219-222",2007,Dec.
"Yoshiki Sugahara,Akihito Kazato,Takahiro Tomioka,MITSUJI SAMPEI","Vertical Vibration Suppression of Railway Vehicle by Primary Suspension Damping Force Control","Dynamics and Design Conference 2007","Proceedings of the Dynamics and Design Conference 2007","The Japan Society of Mechanical Engineers",,,"pp. CD-ROM:403",2007,Sept.
"Yoshiki Sugahara,Tadao Takigami,Akihito Kazato,Reiko Koganei,Mitsuji Sampei","Improvement of Vertical Ride Comfort of Railway Vehicle by Primary Suspension Damping Force Control","12th Asia-Pacific Vibration Conference","Proceedings of the 12th Asia-Pacific Vibration Conference","The Japan Society of Mechanical Engineers",,,"pp. 1-9",2007,June
"Yoshiki Sugahara,Tadao Takigami,Mitsuji Sampei","Suppressing Vertical Vibration in Railway Vehicles through Primary Suspension Damping Force Control",,"Journal of System Design and Dynamics","The Japan Society of Mechanical Engineers","Vol. 1","No. 2","pp. 224-245",2007,Mar.
"Yoshiki Sugahara,Tadao Takigami,Mitsuji Sampei","Vertical Vibration Suppression of Railway Vehicle by Using Variable Coefficient Axle Dampers",,"Transactions of the Japan Society of Mechanical Engineers (C)",,"Vol. 72","No. 721","pp. 2770-2778",2006,Sept.