@misc{indiciaee28b09cc8993,
  title = {Analytical design method for a modified Schwarzschild optics.},
  author = {Antonio Budano and Francesco Flora and Luca Mezi},
  year = {2006},
  doi = {10.1364/ao.45.004254},
  url = {https://pubmed.ncbi.nlm.nih.gov/16778933/},
  note = {Source identifier: 16778933}
}