Number | Date | Country | Kind |
---|---|---|---|
53-7690 | Jun 1978 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4011216 | Menalo et al. | Mar 1977 | |
4278793 | Durcheimer et al. | Jul 1981 |
Number | Date | Country |
---|---|---|
252443 | Dec 1975 | DEX |
Entry |
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Guthikonda et al., JACS. 7584-7585 (1974). |
Cams et al., JACS. 96, 7582-7583 (1974). |