@misc{indiciae2de4124fad7a,
  title = {Quadratic elongation: A quantitative measure of distortion in coordination polyhedra},
  author = {Kelly F. Robinson and G.V. Gibbs and P.H. Ribbe},
  year = {1971},
  doi = {10.1126/science.172.3983.567},
  url = {https://pubs.usgs.gov/publication/70010317},
  note = {Source identifier: 70010317}
}