共 10 条
[5]
DONALDSON EE, 1962, 22 ANN C PHYS EL, P308
[7]
Hawley R., 1960, VACUUM, V10, P310
[9]
RABINOWITZ M, 1964, THESIS WASHINGTON ST
[10]
Wijker W. J., 1961, APPL SCI RES B, V89, P1