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Translated from Meditsinskaya Tekhnika, No. 2, pp. 14–16, March–April, 1990.
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Vasin, L.N., Frolov, Y.A., Kozlova, M.G. et al. Refocusing acicular endoscope fitted with fiberoptics. Biomed Eng 24, 60–64 (1990). https://doi.org/10.1007/BF00562869
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DOI: https://doi.org/10.1007/BF00562869