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T. Kagayama
Fac.of Enginering, Kumamoto Univ.
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R. Kitakoga
Fac.of Science, Kumamoto Univ.
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G. Oomi
Fac.of Enginering, Kumamoto Univ.
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T. Nakama
Fac.of Science, Univ.of the Ryukyus
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K. Yagasaki
Fac.of Science, Univ.of the Ryukyus
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M. Hedo
Fac.of Science, Osaka Univ.
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Y. Onuki
Fac.of Science, Osaka Univ.