@misc{indiciaedde5329bd8ee,
  title = {The question of radiation source geometry},
  author = {Broder, D. L. and Goryanina, Ye. N. and Levis, G. M. and Popkov, K. K. and Rubanov, S. M.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670021924},
  note = {Source identifier: 19670021924}
}