@misc{indiciae8503d2cb5686,
  title = {The Einstein Observatory Medium Sensitivity Survey - Optical identifications for a complete sample of X-ray sources},
  author = {Stocke, J. T. and Liebert, J. and Gioia, I. M. and Maccacaro, T. and Griffiths, R. E. and Danziger, I. J. and Kunth, D. and Lub, J.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19840029419},
  note = {Source identifier: 19840029419}
}