@misc{indiciae11d8afe76b91,
  title = {Integrated auxiliary propulsion for the Space Tug},
  author = {Nichols, J. F. and Sims, J. D.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19760028206},
  note = {Source identifier: 19760028206}
}