@misc{indiciaea2cc665c4c8e,
  title = {Orbital operation study. Volume 3: Basic vehicle summaries},
  author = {Anderson, N. R. and Gianformaggio, A.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720025150},
  note = {Source identifier: 19720025150}
}