@article{oai:nipr.repo.nii.ac.jp:00004131, author = {YAMAGISHI, Hisao and EJIRI, Masaki and HIRASAWA, Takeo and KOKUBUN, Susumu and SATO, Natsuo}, journal = {Proceedings of the NIPR Symposium on Upper Atmosphere Physics}, month = {Feb}, note = {P(論文)}, title = {Foreword}, volume = {6}, year = {1993} }