00385nam a2200145 a 450000500170000002000150001708200130003210000240004524500540006925000080012326000290013130000260016049000370018670000160022320251203110501.0  a3540431543  a519bBER  aKorte, Bernhard and  aCombinatorial OptimizationbTheory and Algorithms  a2nd  aNew YorkbSpringerc2002  axiii,530p.c22 cm. HB  aAlgorithms and combinatoricsd21  aVygen, Jens