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K. Boettcher
Institute for Materials Research, Tohoku University:(Present)Institute of Crystal Growth. Berlin-Adlershof
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A. Luedge
Institute of Crystal Growth, Berlin-Adlershof
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H. Riemann
Institute of Crystal Growth, Berlin-Adlershof
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B. Schleusener
Center of Environmental Studies, University of Potsdam
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K. Shimamura
Institute for Materials Research, Tohoku University
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T. Fukuda
Institute for Materials Research, Tohoku University