@misc{indiciae5a84340cbea4,
  title = {Diffraction grating transmission efficiencies for XUV and soft X rays},
  author = {Schnopper, H. W. and Van Speybroeck, L. P. and Delvaille, J. P. and Epstein, A. and Kaellne, E. and Bachrach, R. Z. and Dijkstra, J. and Lantward, L.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770046430},
  note = {Source identifier: 19770046430}
}