@misc{indiciae1e31b5a7beb8,
  title = {Interplanetary guidance system requirements study. Volume 2 - Computer program descriptions. Part 11 - Performance assessment of low thrust space guidance systems, version 2},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19680002383},
  note = {Source identifier: 19680002383}
}