@article{CTT100780538,
  author = {S. Kitagawa and M. Mizuno and S. Saito and K. Ogino and S. Suzuki and M..Asada},
  title = {Frequency-tunable resonant-tunneling-diode terahertz oscillators applied to absorbance measurement},
  journal = {},
  year = 2017,
}

@misc{CTT100746387,
  author = {鈴木左文 and 北川成一郎 and 淺田雅洋},
  title = {周波数可変テラヘルツ発振器及びその製造方法},
  howpublished = {登録特許},
  year = 2019,
  month  = {},
  note   = {特願2016-517795(2014/09/05), 再表2015/170425(2017/04/20), 特許第6570187号(2019/08/16)}
}