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Scientific Research Institute of the State Patent Examination (NII GPÉ). Translated from Metallurg, No. 10, pp. 28–30, October, 1993.
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Kitaiskii, V. Of interest to the specialist — Innovations. Metallurgist 37, 186–188 (1993). https://doi.org/10.1007/BF00745131
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DOI: https://doi.org/10.1007/BF00745131