@misc{indiciaeceb7e13802f7,
  title = {Manned systems utilization analysis (study 2.1). Volume 1: Executive summary},
  author = {Wolfe, R. R.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19760006053},
  note = {Source identifier: 19760006053}
}