ZHAOShoudong HEXin ZHANGBingqi LIU Qi WANG Hui JIANGYuan. [J]. Journal of Beijing Normal University(Natural Science), 2013, 49(5): 501-505.
Citation: ZHAOShoudong HEXin ZHANGBingqi LIU Qi WANG Hui JIANGYuan. [J]. Journal of Beijing Normal University(Natural Science), 2013, 49(5): 501-505.
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