@misc{indiciaeaa90a434f321,
  title = {The X-ray spectrographic telescope},
  author = {Vaiana, G. S. and Krieger, A. S. and Petrasso, R. and Silk, J. K. and Timothy, A. F.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19750032901},
  note = {Source identifier: 19750032901}
}