@misc{indiciae52fd63e5efad,
  title = {The solid angle (geometry factor) for a spherical surface source and an arbitrary detector aperture},
  author = {Favorite, Jeffrey A.},
  year = {2016},
  doi = {10.1016/j.nima.2015.12.060},
  url = {https://www.osti.gov/biblio/1239547},
  note = {Source identifier: 1239547}
}