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A compendium of NP
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MS14 MINIMUM FREQUENCY
References
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38
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75
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Math. Oper. Res.
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IEEE/ACM Transaction on Networking
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79
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``Improved non-approximability results for vertex cover problems with
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Proc. 2nd Ann. Int. Conf. on Computing and Combinatorics
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80
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SIAM J. Comp.
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Viggo Kann
Mon Apr 21 13:07:14 MET DST 1997