@misc{indiciaeb83589ba0a05,
  title = {SPS phase control studies},
  author = {Lund, W. W. and Sperber, B. R. and Woodcock, G. R.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19820004676},
  note = {Source identifier: 19820004676}
}