No. Title Author Year
1 On the Integrality Gap of the Prize-Collecting Steiner Forest LP Könemann, Jochen et al. 2017
2 A Logarithmic Integrality Gap Bound for Directed Steiner Tree in Quasi-bipartite Graphs Friggstad, Zachary et al. 2016
3 Fast Approximation Algorithms for the Generalized Survivable Network Design Problem Feldmann, Andreas Emil et al. 2016
4 On the Equivalence of the Bidirected and Hypergraphic Relaxations for Steiner Tree Feldmann, Andreas Emil et al. 2014
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