Number | Name | Date | Kind |
---|---|---|---|
2863998 | Marie | Dec 1958 | |
2914736 | Young | Nov 1959 | |
3564546 | Barney et al. | Feb 1971 | |
3671848 | Shapiro et al. | Jun 1972 |
Entry |
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Journal of Applied Physics, vol. 42, No. 1, pp. 85-87, Jan. 1971. |
IEEE Transactions Magnitism, vol. MAG-11, No. 2, pp. 441, 442, Mar. 1975. |