@misc{indiciae926f4572b67c,
  title = {Geometric moire methods with enhanced sensitivity by optical/digital fringe multiplication},
  author = {Han, B. and Ifju, P. and Post, D.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19940035167},
  note = {Source identifier: 19940035167}
}