@misc{indiciae495ae590b9bc,
  title = {Aplanatic two-mirror telescopes: A systematic study. I - Cassegrainian configuration},
  author = {Wyman, C. L. and Korsch, D.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740057835},
  note = {Source identifier: 19740057835}
}