@misc{indiciae5687cc6a1a84,
  title = {Solar cell research, phase 2 Semiannual report},
  author = {Lambert, R. J. and Pfaff, J. A. and Stannard, J. E. and Statler, R. L. and Wilsey, N. D.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700024680},
  note = {Source identifier: 19700024680}
}