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A Property of the Convex Hull of Planar Point Set
fan guang-quan1; 2; qu wen-long3; yang bing-ru2(1.college of information technology; hebei university of economic and business; shijiazhuang 050061; 2.college of information engineering; beijing university of science and technology; beijing 100083; 3.college of information engineering; shijiazhuang university of economics; shijiazhuang 050031; china)
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