ＳＨＥＮ Ｋｕｎ ＣＨＥＮＧＹａｎｊｕｎ ＮＩＵ Ｙｕａｎ. J. Journal of Beijing Normal University(Natural Science), 2013, 49(2): 425-429.
Citation: ＳＨＥＮ Ｋｕｎ ＣＨＥＮＧＹａｎｊｕｎ ＮＩＵ Ｙｕａｎ. J. Journal of Beijing Normal University(Natural Science), 2013, 49(2): 425-429.
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