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Translated from Metallurg, No. 7, pp. 28–29, July, 1965
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Kolganov, G.S., Svet, V.A. Stoppers last longer. Metallurgist 9, 390–391 (1965). https://doi.org/10.1007/BF00732530
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DOI: https://doi.org/10.1007/BF00732530