@misc{indiciaede72b6baac72,
  title = {Crack-like imperfections in a spherical shell},
  author = {Dobreff, P. S. and Sih, G. C.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690019263},
  note = {Source identifier: 19690019263}
}