1. C. Deininger, J. Mayer: Omega energy-filtered convergent beam electron diffraction. In Electron Microscopy 1992, ed. by A. Rios, J.M. Aria, L. Megias-Megias, A. López-Gallindo (Secretariado Publ., Univ. Granada 1992) Vol.1, pp.181–182
2. O. Scherzer: Vorschläge zur Terminologie unrunder Elektronenlinsen. Optik 22, 314–318 (1965)
3. E. Plies: Proposal for an electrostatic energy filter and a monochromator. In Electron Microscopy 1978, ed. by J.M. Sturgess (Microscopical Soc. of Canada, Toronto 1978) Vol.1, pp.50–51.
4. H. Rose: Electrostatic energy filter as monochromator of a highly coherent electron source. Optik 85, 95–98 (1990)
5. R. Castaing, L. Henry: Filtrage magnétique de vitesses en microscopie électronique. J. Microscopie 3, 133–152 (1964)