@misc{indiciae7a6ae81078dc,
  title = {Semiconductor Grade, Solar Silicon Purification Project},
  author = {Ingle, W. M. and Rosler, R. S. and Thompson, S. W. and Chaney, R. E.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19790021427},
  note = {Source identifier: 19790021427}
}