@misc{indiciae1e5e1b0216eb,
  title = {Inexpensive silicon sheets for solar cells},
  author = {Ciszek, T. F. and Schwuttke, G. H.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770000338},
  note = {Source identifier: 19770000338}
}