@misc{indiciae97645371d26f,
  title = {Method of vibration analysis using holographic interferometry and heterodyne optical detection},
  author = {Vlad, V. I. and Maurer, J. and Popa, D.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740015115},
  note = {Source identifier: 19740015115}
}