@misc{indiciaee6ea65aef1cd,
  title = {Skylab orbit decay update and the eleventh hour contingency plan},
  author = {Kaplan, M. H. and Alexander, S. G.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19790052554},
  note = {Source identifier: 19790052554}
}