@article{oai:jaxa.repo.nii.ac.jp:00025938,
 author = {吉田, 鉄生 and 海老澤, 研 and 松下, 恭子 and 辻本, 匡弘 and 川口, 俊宏 and Yoshida, Tessei and Ebisawa, Ken and Matsushita, Kyoko and Tsujimoto, Masahiro and Kawaguchi, Toshihiro},
 issue = {1},
 journal = {The Astrophysical Journal},
 month = {Oct},
 note = {Accepted: 2010-08-16, 資料番号: SA1002640000},
 pages = {760--773},
 title = {Long-term Spectral Variations of Ultraluminous X-ray Sources in the Interacting Galaxy Systems M 51 and NGC 4490/85},
 volume = {722},
 year = {2010}
}