@misc{indiciaeb043c057e43d,
  title = {An improved boundary force method for analysing cracked anisotropic materials},
  author = {Tan, P. W. and Bigelow, C. A.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900024487},
  note = {Source identifier: 19900024487}
}