@misc{indiciaebbe814c534e2,
  title = {Polycrystalline or amorphous semiconductor photovoltaic device having improved collection efficiency},
  author = {Kressel, Henry and D'Aiello, Robert Vincent and Robinson, Paul Harvey},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/20080006899},
  note = {Source identifier: 20080006899}
}