Number | Name | Date | Kind |
---|---|---|---|
3795819 | Harris | Mar 1974 | |
3816754 | Hodgson et al. | Jun 1974 | |
3892979 | Hodgson et al. | Jul 1975 | |
3914618 | Harris | Oct 1975 |
Entry |
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Armstrong et al., "Physical Review," 9-15-62, pp. 1918-1939. |
Zerniky, "Physical Review Letters," 5-5-69, pp. 931-933. |