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All-Union Scientific-Research Institute of the State Patent Examination (VNIIGPÉ). Translated from Metallurg, No. 3, pp. 31–33, March, 1989.
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Kitaiskii, V. Of interest to the specialist-inventions. Metallurgist 33, 60–62 (1989). https://doi.org/10.1007/BF00759658
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DOI: https://doi.org/10.1007/BF00759658