@misc{indiciae6fce92606dbc,
  title = {Outside-eclipse spectral changes in beta Lyrae},
  author = {Wolf, G. W. and Sobieski, S. and Kondo, Y.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740038478},
  note = {Source identifier: 19740038478}
}