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This is an update request for the document Lifting valid inequalities for the precedence constrained knapsack problem. by R.L.M.J. van de Leensel, C.P.M. van Hoesel and J.J. van de Klundert

Your paper was deposited in Research Papers in Economics and appears online at http://arno.unimaas.nl/show.cgi?fid=16562
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