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ＹＡＮＧＪｉｎｒｕｉＭＵＷｅｉｈｕａＦＡＮＧＤｅｃａｉＹＵＳｈａｎｇｘｉａｎ. J. Journal of Beijing Normal University(Natural Science), 2011, 47(5): 478-481.

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ＹＡＮＧＪｉｎｒｕｉＭＵＷｅｉｈｕａＦＡＮＧＤｅｃａｉＹＵＳｈａｎｇｘｉａｎ. J. Journal of Beijing Normal University(Natural Science), 2011, 47(5): 478-481.

Citation:

ＹＡＮＧＪｉｎｒｕｉＭＵＷｅｉｈｕａＦＡＮＧＤｅｃａｉＹＵＳｈａｎｇｘｉａｎ. J. Journal of Beijing Normal University(Natural Science), 2011, 47(5): 478-481.

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