Number | Name | Date | Kind |
---|---|---|---|
3975772 | Lin | Aug 1976 | |
4649449 | Sawada et al. | Mar 1987 | |
4725909 | Kawai | Feb 1988 | |
4807076 | Nakashima et al. | Feb 1989 | |
4881143 | Bhattacharyya et al. | Nov 1989 |
Number | Date | Country |
---|---|---|
0325365 | Jul 1989 | EPX |
Entry |
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H. S. Gill et al., Journal of Applied Physics, vol. 65, No. 1, p. 402, Jan. 1989. |