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All-Union Scientific Research Institute of the State Patent Examination (VNIIGPE). Translated from Metallurg, No. 7, pp. 31–32, July, 1991.
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Kitaiskii, V. Of interest to the specialist — Innovations. Metallurgist 35, 124–126 (1991). https://doi.org/10.1007/BF00750385
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DOI: https://doi.org/10.1007/BF00750385