@misc{indiciaec7e1c1882ff8,
  title = {An Improved Photoelastic Method for Determining Plane Stresses},
  author = {Norris, C B and Voss, A W},
  year = {1948},
  url = {https://ntrs.nasa.gov/citations/19930082061},
  note = {Source identifier: 19930082061}
}