1. Diffraction effects in electronmicroscopic images—reported by P.B. Hirsch;Howie;J. Phys. Soc. Japan,1962
2. Metallurgical investigations with a 500kV electron microscope;Fujita;Jap. J. appl. Phys.,1967
3. Report on visit to Japan to study high voltage electron microscopes;Hale;National Physical Laboratory Report,1966
4. Greater power for electron microscopy;Hale;New Scientist,1967
5. A background to high voltage electron microscopy;Makin;A.E.R.E. Report—R5570,1967