@misc{indiciaef4534c5f1890,
  title = {X-ray search for dark lens objects},
  author = {Hattori, M. and Ikebe, Y. and Asaoka, I. and Takeshima, T. and Mihara, T. and Boehringer, H. and Tsuru, T. G. and Tamura, T.},
  year = {1996},
  url = {https://ntrs.nasa.gov/citations/19970024722},
  note = {Source identifier: 19970024722}
}