@article{CTT100794629,
  author = {Susumu Sato and Toshiro Yamamoto and Yasuhiro Ogawa and Noriko Fukuro},
  title = {Research on Measurement Method of Road Gradient and Altitude by On-Road Driving},
  journal = {SAE International Journal of Fuels and Lubricants},
  year = 2009,
}

@inproceedings{CTT100643833,
  author = {Susumu Sato and Toshiro Yamamoto and Yasuhiro Ogawa and Hiroshi Sasaki and Hiroshi Kikuiri and Katsuya Kaneko},
  title = {Study on Measurement Method of Driving Force Using New Type Wheel Torque Meter in On-road Driving},
  booktitle = {Proceedings},
  year = 2011,
}