@misc{indiciae33a359513a7f,
  title = {A wide range stress intensity factor expression for the C-shaped specimen},
  author = {Kapp, J. A. and Underwood, J. H. and Newman, J. C., Jr.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19810030337},
  note = {Source identifier: 19810030337}
}