@misc{indiciaec27c4a92571b,
  title = {Excitons trapped at impurity centers in highly ionic crystals.},
  author = {DS McClure and C Pedrini},
  year = {1985},
  doi = {10.1103/physrevb.32.8465},
  url = {https://pubmed.ncbi.nlm.nih.gov/9937053/},
  note = {Source identifier: 9937053}
}