@misc{indiciaefecb53ed13a7,
  title = {X-ray astronomy-40 years on.},
  author = {Herbert Gursky},
  year = {2002},
  doi = {10.1126/science.1075482},
  url = {https://pubmed.ncbi.nlm.nih.gov/12202808/},
  note = {Source identifier: 12202808}
}