@misc{indiciaedf88b095d192,
  title = {Photographic and other optical techniques for studying two-phase flow},
  author = {Graham, R. W. and Hsu, Y. Y. and Simon, F. F. and Simoneau, R. J.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19700036718},
  note = {Source identifier: 19700036718}
}