Number | Name | Date | Kind |
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2353255 | Malm et al. | Jul 1944 | |
2816887 | Lamborn | Dec 1957 | |
2861069 | Touey et al. | Nov 1958 | |
3976595 | Scott et al. | Aug 1976 | |
4016353 | Goheen et al. | Apr 1977 |
Entry |
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Sagatova, T. A. et al., Chem. Abstracts, 1981, 94, 49001f. |
Badalov, B. D. et al., Chem. Abstracts, 1981, 94, 49002g. |