@misc{indiciaebb129271109b,
  title = {MEASURING THE DENSITY DISTRIBUTION IN A THREE-DIMENSIONAL OBJECT USING THE SCHLIEREN METHOD},
  author = {Bazhenova, T. V. and Leonteva, Z. S.},
  year = {1962},
  url = {https://ntrs.nasa.gov/citations/19630002394},
  note = {Source identifier: 19630002394}
}