共 7 条
[2]
AHMED H, 1973, 6TH P SEM S, P217
[3]
AHMED H, 1972, 5TH P EUR C EL MICR, P10
[4]
BROERS AN, 1972, 5TH P INT C EL ION B, P3
[5]
CHARACTERISTICS OF THE HOT CATHODE ELECTRON MICROSCOPE GUN
[J].
BRITISH JOURNAL OF APPLIED PHYSICS,
1952, 3 (FEB)
:40-46
[6]
HANSZEN KJ, 1967, Z NATURFORSCH, V2, P238
[7]
Smith K. C. A., 1956, THESIS U CAMBRIDGE