@misc{indiciae04bf48e96d6b,
  title = {The development and test of a deformable diffraction grating for a stigmatic EUV spectroheliometer},
  author = {Timothy, J. Gethyn and Walker, A. B. C., Jr. and Morgan, J. S. and Huber, M. C. E. and Tondello, G.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920011040},
  note = {Source identifier: 19920011040}
}