@misc{indiciaeaf978b805173,
  title = {Space Shuttle GN and C Development History and Evolution},
  author = {Zimpfer, Douglas and Hattis, Phil and Ruppert, John and Gavert, Don},
  year = {2011},
  url = {https://ntrs.nasa.gov/citations/20110014833},
  note = {Source identifier: 20110014833}
}