@misc{indiciae1d11eb7b0f0a,
  title = {Orthogonal mirror telescopes for x-ray astronomy},
  author = {Chase, R. C. and Vanspeybroeck, L. P. and Zehnpfennig, T. F.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710045610},
  note = {Source identifier: 19710045610}
}