@article{1311171,
  author = {D DiChio and S Natali and C Kuyatt},
  title = {Focal Properties of the Two-Tube Electrostatic Lens for Large and Near-Unity Voltage Ratios},
  year = {1974},
  number = {45},
  month = {1974-04-01 00:04:00},
  publisher = {Review of Scientific Instruments},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=620059},
  language = {en},
}