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2. A. Petzold and G. Peschmann,Enamel and Enameling. A Reference Book [Russian translation], Metallurgiya, Moscow (1990).
3. L. L. Bragina, “On the role of CuO in fixing enamel coatings,” in:Glass Enamels and Heat-Resistant Coatings for Metals [in Russian], Novocherkassk (1993).
4. A. Ostrowski, “Badania nad oprakowaniem bezkobaltowei emalii podstawowej na blache Stalowa,”Szklo Ñeram., No. 4, 141–144 (1984).
5. E. M. Oshurkov, N. S. Smirnov, and S. N. Antonova, “Application of metallurgical slag in production of enamels for chemical equipment and pipes,”Steklo Keram., No. 7, 19–22 (1963).