@misc{indiciae0cf5d1606d03,
  title = {Simply-aligned heliostat.},
  author = {Bradley, J. T. and Eichenbaum, B. R. and Schotland, R. M. and Stroke, H. H.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680050292},
  note = {Source identifier: 19680050292}
}