@article{oai:jaxa.repo.nii.ac.jp:00023760,
 author = {上本, 純平 and 小野, 高幸 and 熊本, 篤志 and 飯島, 雅英 and Uemoto, Jyunpei and Ono, Takayuki and Kumamoto, Atsushi and Iizima, Masahide},
 issue = {12},
 journal = {Journal of Atmospheric and Solar-Terrestrial Physics},
 month = {Aug},
 note = {Accepted: 2006-05-10, 資料番号: SA1000436000},
 pages = {1340--1351},
 title = {Statistical analysis of the ionization ledge in the equatorial ionosphere observed from topside sounder satellites},
 volume = {68},
 year = {2006}
}