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2. Measurement of plastic strain in steel specimens by means of intensity distribution of laser speckle;Kato;J. Soc. Materials Sci. Japan (in Japanese),1993
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4. Kato, A., Kawamura, M., Ito K., Measurement of plastic strain in steel materials by laser speckle (Influence due to the difference of grain size and materials), J. JSNDI (in Japanese), 44: (1995), 529-535.
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