Number | Date | Country | Kind |
---|---|---|---|
1-219181 | Aug 1989 | JPX | |
2-179852 | Jul 1990 | JPX |
Number | Date | Country |
---|---|---|
0269859 | Jun 1988 | EPX |
Entry |
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Fujii et al., Chemical Abstracts, vol. 108, entry 211,092p (1988). |
Hawley's Condensed Chemical Dictionary, Eleventh Edition, 1987, pp. 584-585. |