@misc{indiciae49a2a63563d1,
  title = {In-flight maintenance study Final report},
  author = {Gusman, J. and Mc Candliss, W. and Polhemus, J. T. and Starner, D. and Zermuehlen, R.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19700007395},
  note = {Source identifier: 19700007395}
}