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Inapproximability and a polynomially solvable special case of a network improvement problem 期刊论文
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH, 2004, 卷号: 155, 期号: 1, 页码: 251-257
作者:  Zhang, JZ;  Yang, XG;  Cai, MC
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network flows  shortest path  MAXIMUM 3-SATISFIABILITY  inapproximability