@misc{indiciae3a65d0f6cac9,
  title = {Delta's inexpensive, reliable, and versatile third generation upper stage},
  author = {Bonnett, E. W. and Schindler, W. R.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740028494},
  note = {Source identifier: 19740028494}
}