@misc{indiciae5e955f141233,
  title = {Space program payload costs and their possible reduction},
  author = {Vanvleck, E. M. and Deerwester, J. M. and Norman, S. M. and Alton, L. R.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730008108},
  note = {Source identifier: 19730008108}
}