@misc{indiciaee919c8a017a5,
  title = {Shuttle Risk Progression by Flight},
  author = {Hamlin, Teri and Kahn, Joe and Thigpen, Eric and Zhu, Tony and Lo, Yohon},
  year = {2011},
  url = {https://ntrs.nasa.gov/citations/20110008208},
  note = {Source identifier: 20110008208}
}