@misc{indiciae00c9b1f9957a,
  title = {GaP betavoltaic cells as a power source},
  author = {Pool, F. S. and Stella, Paul M. and Anspaugh, B.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910009898},
  note = {Source identifier: 19910009898}
}