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By: Zhang, Yin-Sun - Ding, W-N - Bu, He - Tian, LuType: ArticleIn: ForktailVolume: 7Series:Issue:Date: 1992Page Range: 131--137Publication Info: Oxford,Subjects:
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By: Zhang, Yin-Sun - He, FengqiType: ArticleIn: ForktailVolume: 8Series:Issue:Date: 1993Page Range: 125--132Publication Info: Oxford,Subjects: