@misc{indiciae85c3fc81a8f1,
  title = {Extended norm-conserving pseudopotentials.},
  author = {EL Shirley and DC Allan and RM Martin and JD Joannopoulos},
  year = {1989},
  doi = {10.1103/physrevb.40.3652},
  url = {https://pubmed.ncbi.nlm.nih.gov/9992335/},
  note = {Source identifier: 9992335}
}