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\subsection{\texorpdfstring{2003}{2003}}
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\textbf{Physics Seminar, Ajou University} (Suwon, Korea, April 18)
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\textbf{Seminar at Center for Nanotubes and Nanostructured Composites (CNNC), Sungkyunkwan University} (Suwon, Korea, April 18)
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\textbf{Seminar of Center for Theoretical Physics (CTP), Seoul National University} (Seoul, Korea, April 16)
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