@article{Kawamura:2019l2,
  author = "Kawamura, Seiji",
  title = "{Primordial gravitational wave and DECIGO}",
  doi = "10.22323/1.356.0019",
  journal = "PoS",
  year = 2019,
  volume = "KMI2019",
  pages = "019"
}