@misc{indiciae928ccc63e26a,
  title = {Configuration selection for passive gravity- gradient satellites},
  author = {Hartbaum, H. and Hooker, W. and Leliakov, I. and Margulies, G.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660027042},
  note = {Source identifier: 19660027042}
}