Number | Name | Date | Kind |
---|---|---|---|
3842194 | Clemens | Oct 1974 | |
3882214 | Nosker et al. | May 1975 | |
3950173 | Ross et al. | Apr 1976 | |
4104832 | Keizer | Aug 1978 | |
4162510 | Keizer | Jul 1979 | |
4211617 | Hunyar | Jul 1980 |
Entry |
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Ryan, RCA Review, vol. 39, pp. 87-115 (1978). |
Firester, RCA Review, vol. 39, pp. 427-471 (1978). |