@misc{indiciae954463d221b8,
  title = {Protective telescoping shield for solar concentrator},
  author = {Argoud, M. J. and Walker, W. L. and Butler, L. V.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19860018234},
  note = {Source identifier: 19860018234}
}