@article{oai:ismrepo.ism.ac.jp:00033591, author = {Nakano, Shin'ya and Fok, Mei-Ching and Brandt, Pontus C son and Higuchi, Tomoyuki}, issue = {5}, journal = {Journal of Geophysical Research}, month = {May}, pages = {3708--3723}, title = {Estimation of temporal evolution of the helium plasmasphere based on a sequence of IMAGE/EUV images}, volume = {119}, year = {2014} }