@misc{indiciaeca6d8c7ce434,
  title = {Nonperiodic variations in astrophysical systems: Investigating frequency evolution},
  author = {Boyd, Patricia T. and Carter, Patricia H. and Gilmore, Robert and Dolan, Joseph F.},
  year = {1995},
  url = {https://ntrs.nasa.gov/citations/19950061700},
  note = {Source identifier: 19950061700}
}