@misc{indiciaec41f5848b8c5,
  title = {Optimum launch trajectories for the ATS-E mission},
  author = {Spurlock, O. F. and Teren, F.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700062750},
  note = {Source identifier: 19700062750}
}