@misc{indiciae81d0fb5302a9,
  title = {Efficient pseudopotentials for plane-wave calculations. II. Operators for fast iterative diagonalization.},
  author = {N Troullier and JL Martins},
  year = {1991},
  doi = {10.1103/physrevb.43.8861},
  url = {https://pubmed.ncbi.nlm.nih.gov/9996554/},
  note = {Source identifier: 9996554}
}