@misc{indiciaec86deb2b77df,
  title = {Comparative evaluation of existing expendable upper stages for space shuttle},
  author = {Weyers, V. J. and Sagerman, G. D. and Borsody, J. and Lubick, R. J.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740022194},
  note = {Source identifier: 19740022194}
}