@misc{indiciaef8a160893cd5,
  title = {Optical Variability of Blazars},
  author = {Ghosh, K. K. and Ramsey, B. D. and Sadun, A. C. and Soundararajaperumal, S.},
  year = {2000},
  url = {https://ntrs.nasa.gov/citations/20000064097},
  note = {Source identifier: 20000064097}
}