Online published: 2004-03-19
Supported by
supported by the National Natural Science Foundation of China(40101004)
LI Xiao-Yan , Gao Qian-Zhao . [J]. Journal of University of Chinese Academy of Sciences, 2004 , 21(2) : 281 -281 . DOI: 10.7523/j.issn.2095-6134.2004.2.021
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