@misc{indiciae8cd73901dba7,
  title = {Donor impurity states on structured semiconductor interfaces.},
  author = {H Sun and SW Gu},
  year = {1992},
  doi = {10.1103/physrevb.46.2244},
  url = {https://pubmed.ncbi.nlm.nih.gov/10003900/},
  note = {Source identifier: 10003900}
}