@misc{oai:jaxa.repo.nii.ac.jp:00030650, author = {Deeter, John E. and Boynton, Paul E. and 宮本, 重徳 and 北本, 俊二 and 長瀬, 文昭 and 河合, 誠之 and Deeter, John E. and Boynton, Paul E. and Miyamoto, Sigenori and Kitamoto, Shunji and Nagase, Fumiaki and Kawai, Nobuyuki}, month = {Oct}, note = {Note: Accepted for publication in The Astrophysical Journal, 1991 December 10, 資料番号: SA8000404000}, title = {Decrease in the Orbital Period of Hercules X-1}, year = {1991} }