@misc{indiciae919a8ed90a06,
  title = {MSFC solar activity predictions for satellite orbital lifetime estimation},
  author = {Fuler, H. C. and Lundquist, C. A. and Vaughan, W. W.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19800010218},
  note = {Source identifier: 19800010218}
}