@misc{indiciaebc3891d956dd,
  title = {Wide-angle flat field telescope},
  author = {Hallam, K. L. and Howell, B. J. and Wilson, M. E.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19860019260},
  note = {Source identifier: 19860019260}
}