@misc{indiciaedbf8ed6c68ae,
  title = {Bonding in eight ordered clinopyroxenes isostructural with diopside},
  author = {J. R. Clark and D.E. Appleman and J. J. Papike},
  year = {1968},
  doi = {10.1007/bf00371067},
  url = {https://pubs.usgs.gov/publication/70001813},
  note = {Source identifier: 70001813}
}