@misc{indiciae5d6f9b2695e8,
  title = {Variability analysis in low count rate sources},
  author = {Collura, A. and Maggio, A. and Sciortino, S. and Serio, S. and Vaiana, G. S.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870051106},
  note = {Source identifier: 19870051106}
}