@article{113891, author = {C Kuyatt and D DiChio and S Natali}, title = {Third-Order Asymptotic Aberration Coefficients of Electron Lenses. III. Formulas and results for the two-tube electrostatic lens}, year = {1974}, number = {45}, month = {1974-10-01}, publisher = {Review of Scientific Instruments}, language = {en}, }