1. Electrostatic Lens Systems;Heddle,2000
2. FDM for curved geometries in electrostatics II: the minimal algorithm;David,2014
3. Finite difference method for boundary value problems. Application: high precision electrostatics;David,2015
4. Accurate calculations of electrostatic potentials for cylindrically symmetric lenses;David;Rev. Sci. Instrum.,1983
5. High precision electrostatic potential calculations for cylindrically symmetric lenses;David;Rev. Sci. Instrum.,2007