@misc{indiciae33d96030997a,
  title = {Valence excitations in electron microscopy: resolved and unresolved issues.},
  author = {A Howie},
  year = {2003},
  doi = {10.1016/s0968-4328(03)00022-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/12895483/},
  note = {Source identifier: 12895483}
}