@article{oai:jaxa.repo.nii.ac.jp:00025498, author = {谷畑, 千春 and 片岡, 淳 and 高橋, 忠幸 and Madejski, Greg M. and Tanihata, Chiharu and Kataoka, Jun and Takahashi, Tadayuki and Madejski, Greg M.}, issue = {2}, journal = {The Astrophysical Journal}, month = {Feb}, note = {Accepted: 2003-10-14, 資料番号: SA1002200000}, pages = {759--770}, title = {Evolution of the Synchrotron Spectrum in Markarian 421 during the 1998 Campaign}, volume = {601}, year = {2004} }