Number | Date | Country | Kind |
---|---|---|---|
89 00657 | Jan 1989 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
4563458 | Widdig et al. | Jan 1986 |
Entry |
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Widdig et al., Chem. Abst. 102-6203q (1985). |
Froestle, Chem. Abst. 108-167322s (1988). |
Hardy et al., Chem. Abst., 111-23390b (1989). |