@misc{indiciaeef2fa8d58a2f,
  title = {Mission to Planet Earth},
  author = {Tilford, Shelby G. and Wilson, Gregory S. and Backlund, Peter W.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19920029892},
  note = {Source identifier: 19920029892}
}