@misc{indiciaeb040f4fa6af2,
  title = {Why Crystals Exist.},
  author = {F Zwicky},
  year = {1931},
  doi = {10.1073/pnas.17.9.524},
  url = {https://pubmed.ncbi.nlm.nih.gov/16587660/},
  note = {Source identifier: 16587660}
}