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Yang Hu;Sun Yaojun;Ping Zhenghua;Long Yingcai
2000, Vol. 58(11): 1467-1470
Fudan University, Department of Macromolecular Science.Shanghai (200433);Fudan Univ, Ctr Anal & Measurement.Shanghai(200433);Fudan Univ, Dept Chem.Shanghai(200433)