@misc{indiciaee528a6ba236c,
  title = {Scheduling technique improvement study for advanced programs. Volume 2: Stage 2 advanced space transport program},
  author = {Crain, D. P.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710029218},
  note = {Source identifier: 19710029218}
}