@misc{indiciae3d1d29453cfc,
  title = {Solar-angle sensor has no moving parts},
  author = {Exner, D. W., Jr. and Meisenholder, G. W. and Schmidt, L. F.},
  year = {1964},
  url = {https://ntrs.nasa.gov/citations/19630000039},
  note = {Source identifier: 19630000039}
}