@article{oai:nipr.repo.nii.ac.jp:00004078,
 author = {SATO, Natsuo and HIRASAWA, Takeo and KOKUBUN, Susumu and FUJII, Ryoichi},
 journal = {Proceedings of the NIPR Symposium on Upper Atmosphere Physics},
 month = {Nov},
 note = {P(論文)},
 title = {Foreword},
 volume = {3},
 year = {1990}
}