@misc{indiciae006abf227748,
  title = {Modeling preparation costs for space missions by using major cost drivers},
  author = {Sherif, J. S. and Remer, D. S. and Buchanan, H. R.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910022965},
  note = {Source identifier: 19910022965}
}