@misc{indiciae0e8e1bcccfca,
  title = {Two-dimensional structural modulation in epitaxial CaF2 overlayers on Si(111).},
  author = {KG Huang and J Zegenhagen and JM Phillips and JR Patel},
  year = {1994},
  doi = {10.1103/physrevlett.72.2430},
  url = {https://pubmed.ncbi.nlm.nih.gov/10055878/},
  note = {Source identifier: 10055878}
}