Number | Date | Country | Kind |
---|---|---|---|
2813200 | Mar 1978 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
1752050 | Young | Mar 1930 | |
1934068 | Jolly | Nov 1933 | |
2722211 | Hawkes | Nov 1956 | |
3620967 | Gulick | Nov 1971 | |
4097369 | Ebel et al. | Jun 1978 | |
4101414 | Kim | Jul 1978 |
Entry |
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Gmelin, Handbuch Der Anorganischen Chemie, Natrium No. 21 (1965) Verlag Chemie, pp. XI, 613-616, 624, 625. _ |