@misc{oai:jaxa.repo.nii.ac.jp:00030686,
 author = {高野, 史郎 and 小山, 勝二 and Takano, Shiro and Koyama, Katsuji},
 month = {Aug},
 note = {Note: Submitted to Publ. Astron. Soc. Japan, 資料番号: SA8000440000},
 title = {Two Hard X-ray Sources in the Central Region of the Virgo Cluster},
 year = {1990}
}