@article{CTT100544637,
  author = {K. Tsuji and S. Fujikawa and K. Yamada and N. Yoshida and K. Yamamoto and T. Kikugawa},
  title = {Precise Measurement of the <sup>13</sup>CH<sub>4</sub>/<sup>12</sup>CH<sub>4</sub> Ratio of Diluted Methane Using a Near-Infrared Laser Absorption Spectrometer},
  journal = {Sensors and Actuators B: Chemical},
  year = 2006,
}

@inproceedings{CTT100544657,
  author = {藤川誠二 and 辻潔 and 山本和成 and 上原喜代治 and 菊川 知之 and 吉田尚弘},
  title = {レーザー分光法を用いたメタンの炭素同位体比計測},
  booktitle = {2001年度日本地球化学会年会講演要旨集},
  year = 2001,
}