@misc{oai:nipr.repo.nii.ac.jp:00015204, author = {Ogawa, Yasunobu and ERG-EISCAT, team}, month = {Dec}, note = {The Ninth Symposium on Polar Science/Ordinary sessions: [OS] Space and upper-atmosphere sciences, Wed. 5 Dec. / Entrance Hall (1st floor), National Institute of Polar Research}, title = {Bi-directional electrons and their ionization in the ionosphere: ERG-EISCAT simultaneous observations}, year = {2018} }