@misc{indiciae10208c79ca3c,
  title = {Solar power satellite rectenna design study: Directional receiving elements and parallel-series combining analysis},
  author = {Gutmann, R. J. and Borrego, J. M.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19790007868},
  note = {Source identifier: 19790007868}
}