Lifetimes of cold cathodes for helium‐neon gas lasers
1970 ◽
Vol 43
(516)
◽
pp. 909-910
◽
1965 ◽
Vol 53
(11)
◽
pp. 1780-1781
◽
1964 ◽
Vol 8
(1)
◽
pp. 3-12
◽
1966 ◽
Vol 37
(6)
◽
pp. 808-808
◽