@misc{indiciae447ed77f3fb1,
  title = {Correcting for nonlinear effects in fracture toughness testing.},
  author = {Liebowitz, H. and Eftis, J.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720040730},
  note = {Source identifier: 19720040730}
}