@article{CTT100481632,
  author = {K.Uehara and K.Yamamoto and T.Kikugawa and S.Toyoda and K.Tsuji and N.Yoshida},
  title = {Precise Isotope Abundance Ratio Measurement of Nitrous Oxide Using Diode Lasers},
  journal = {Sensors and Actuators B: Chemical},
  year = 2003,
}

@inproceedings{CTT100544657,
  author = {S. FUJIKAWA and K. TSUJI and K. YAMAMOTO and K. UEHARA and T. KIKUGAWA and N. YOSHIDA},
  title = {Carbon isotope analysis of methane by new laser-spectroscopic method},
  booktitle = {Proceedings of Annual Meeting of the Geochemical Society of Japan 2001},
  year = 2001,
}