@misc{indiciae5345dae08e6c,
  title = {Magnification variations in reflection electron microscopy using diffracted beams.},
  author = {J M Cowley and P E Nielsen},
  year = {1975},
  doi = {10.1016/s0304-3991(75)80017-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/1236027/},
  note = {Source identifier: 1236027}
}