共 5 条
[1]
BRADLEY RC, UNPUB 1953 C GAS EL
[2]
The removal of thorium from the surface of a thoriated tungsten filament by positive ion bombardment
[J].
PHYSICAL REVIEW,
1923, 22 (02)
:148-160
[3]
Lamar E. S., 1934, SCIENCE, V80, P541
[4]
WEHNER G, IN PRESS J APPL PHYS
[5]
1923, PHIL MAG, V45, P98