1. 2H. M. Davis, J. H. Keeler, and P. K. Chu , "Distribution of Hydrogen in the Steel-Enamel System ," presented at the Fifty-Second Annual Meeting of The American Ceramic Society, New York, 1950 (Enamel Division, No. 7).
2. 4See reference 2.
3. Über die Reduktion von gemischten Oxyden