@misc{indiciae97cc50568fd4,
  title = {Impact spallation experiments - Fracture patterns and spall velocities},
  author = {Polanskey, Carol A. and Ahrens, Thomas J.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900061676},
  note = {Source identifier: 19900061676}
}