@misc{indiciae3ad5be5c1fc0,
  title = {Simultaneous communications/tracking/navigation for multiple spacecraft (in a beam) in deep space},
  author = {Cheung, Kar-Ming},
  year = {2018},
  url = {https://ntrs.nasa.gov/citations/20210006174},
  note = {Source identifier: 20210006174}
}