Kästner, G., Messerschmidt, U.
A 1000 kV TEM running over 25 years
JEOL News, Electron Optics Instrumentation 34, (No. 1),pp 24-28 (1999)
A JEOL 1000 kV High-Voltage Electron Microscope has been running since 1971 when it was installed in Halle (Saale), Germany, with 280 thousand micrographs being exposed up to now.