@misc{indiciae4c057262af45,
  title = {A multiple-access satellite relay system for low data rate users},
  author = {Gilchriest, C. E. and Heffernan, P. J.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19700041229},
  note = {Source identifier: 19700041229}
}