@misc{indiciae7ee4cea983a3,
  title = {Efficiency functions for a 316 g/mm echelle grating},
  author = {Cushman, G. W. and Carpenter, K. G.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19870049150},
  note = {Source identifier: 19870049150}
}