@misc{indiciae071828a6da09,
  title = {Portable Power And Digital-Communication Units},
  author = {Levin, Richard R. and Henry, Paul K. and Rosenberg, Leigh S.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920000277},
  note = {Source identifier: 19920000277}
}