@misc{indiciaeb295efdd91a8,
  title = {Further evidence for a black hole in Beta Lyrae.},
  author = {Kondo, Y. and Mccluskey, G. E., Jr. and Houck, T. E.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730030835},
  note = {Source identifier: 19730030835}
}