@misc{indiciae2d16541bc3f9,
  title = {X Persei - Optical polarization variation on the 580 day binary-like period},
  author = {Kemp, J. C. and Barbour, M. S.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19830038069},
  note = {Source identifier: 19830038069}
}