@article{CTT100589914,
  author = {Yoshiki Sugahara and Tadao Takigami and Akihito Kazato and Reiko Koganei and Mitsuji Sampei},
  title = {Suppression of Vertical Vibration in Railway Vehicles by Damping Force Control of Primary Suspension Using an LQG Controller},
  journal = {Journal of System Design and Dynamics},
  year = 2008,
}

@article{CTT100551115,
  author = {Yoshiki Sugahara and Tadao Takigami and Mitsuji Sampei},
  title = {Suppressing Vertical Vibration in Railway Vehicles through Primary Suspension Damping Force Control},
  journal = {Journal of System Design and Dynamics},
  year = 2007,
}

@article{CTT100521358,
  author = {菅原能生 and 瀧上唯夫 and 三平 満司},
  title = {可変減衰軸ダンパを用いた鉄道車両の上下振動低減},
  journal = {日本機械学会論文集（Ｃ編）},
  year = 2006,
}

@inproceedings{CTT100551127,
  author = {Yoshiki Sugahara and Tadao Takigami and Akihito Kazato and Reiko Koganei and Mitsuji Sampei},
  title = {Improvement of Vertical Ride Comfort of Railway Vehicle by Primary Suspension Damping Force Control},
  booktitle = {Proceedings of the 12th Asia-Pacific Vibration Conference},
  year = 2007,
}