@misc{indiciae581f636f1e26,
  title = {Ray statistics in a random medium with stratified background. Diffusion of rays in random media},
  author = {Liu, C. H. and Yeh, K. C.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680012756},
  note = {Source identifier: 19680012756}
}