Number | Name | Date | Kind |
---|---|---|---|
4039297 | Takenaka | Aug 1977 | |
4290847 | Johnson et al. | Sep 1981 | |
4303732 | Torobin | Dec 1981 | |
4303737 | Litchfield et al. | Dec 1981 | |
4349456 | Sowman | Sep 1982 |
Entry |
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Preparation and Characterization of ZrO.sub.2 and HfO.sub.2 Microballons, Gilman, Ceramic Bulletin, vol. 46, No. 6 (1967), pp. 593-595. |