Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yuma Takida and Kouji Nawata and Hiroaki Minamide,Injection-seeded backward terahertz-wave parametric oscillator,APL Photonics,2378-0967,AIP Publishing,2020-06-01,5,6,061301,https://cir.nii.ac.jp/crid/1360853567744895872,https://doi.org/10.1063/5.0007306