@misc{indiciaef5a9112a4bc3,
  title = {True polarization curves for Beta Lyrae.},
  author = {Appenzeller, I. and Hiltner, W. A.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670058742},
  note = {Source identifier: 19670058742}
}