@inproceedings{CTT100658670,
  author = {Masahiko Hatcho and Sou Watanabe and Haruaki Matsuura and Hiroshi Akatsuka},
  title = {Peculiarity of Optical Emission Spectroscopic Characteristics of Expanding Nitrogen Arc-Jet Plasma},
  booktitle = {Proceedings of Space Transportation Symposium: FY2012},
  year = 2013,
}

@inproceedings{CTT100652039,
  author = {Masahiko Hatcho and Sou Watanabe and Haruaki Matsuura and Hiroshi Akatsuka},
  title = {Optical Emission Spectroscopic Characteristics of Expanding Nitrogen Arc-Jet Plasma},
  booktitle = {The Papers on Technical Meeting on "Plasma Science and Technology", IEE Japan},
  year = 2013,
}