@article{93621,
  author = {Brian Lawn},
  title = {Indentation of Ceramics with Spheres: A Century After Hertz},
  year = {1998},
  number = {81},
  month = {1998-05-04},
  publisher = {Journal of the American Ceramic Society},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=850006},
  language = {en},
}