@misc{indiciae89181b50c169,
  title = {Scanning ion microscopy and ion beam micro-machining.},
  author = {I W Drummond and J V Long},
  year = {1967},
  doi = {10.1038/215950a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/6055421/},
  note = {Source identifier: 6055421}
}