@article{113841,
  author = {C Kuyatt and D DiChio and S Natali},
  title = {Focal Properties of the Two-Tube Electrostatic Lens for large Voltage Ratios},
  year = {1973},
  number = {10},
  month = {1973-11-01},
  publisher = {Journal of Vacuum Science and Technology},
  language = {en},
}