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Translated from Steklo i Keramika, No. 9, pp. 32–33, September, 1976.
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Khatuntseva, P.F., Plaksyuk, N.P. Contribution made by innovators. Glass Ceram 33, 589–591 (1976). https://doi.org/10.1007/BF00701497
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DOI: https://doi.org/10.1007/BF00701497