@misc{indiciaec5a224872d6c,
  title = {The planet Venus - A new periodic spectrum variable.},
  author = {Young, L. G. and Young, A. T. and Young, J. W. and Bergstralh, J. T.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730041819},
  note = {Source identifier: 19730041819}
}