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Bounded Degree Group Steiner Tree Problems., and . CoRR, (2019)Bi-Covering: Covering Edges with Two Small Subsets of Vertices., , , , and . SIAM J. Discret. Math., 31 (4): 2626-2646 (2017)Polylogarithmic Additive Inapproximability of the Radio Broadcast Problem., and . SIAM J. Discret. Math., 19 (4): 881-899 (2005)An Improved Approximation of the Achromatic Number on Bipartite Graphs., and . SIAM J. Discret. Math., 21 (2): 361-373 (2007)Prize-collecting steiner network problems., , , and . ACM Trans. Algorithms, 9 (1): 2:1-2:13 (2012)Asymmetric k-center is log* n-hard to approximate., , , , , , and . J. ACM, 52 (4): 538-551 (2005)Approximation algorithm for k-node connected subgraphs via critical graphs., and . STOC, page 138-145. ACM, (2004)On Set Expansion Problems and the Small Set Expansion Conjecture., and . WG, volume 8747 of Lecture Notes in Computer Science, page 189-200. Springer, (2014)Approximation Algorithms for Minimum Time Broadcast., and . ISTCS, volume 601 of Lecture Notes in Computer Science, page 67-78. Springer, (1992)Improved Bounds for Sum Multicoloring and Scheduling Dependent Jobs with Minsum Criteria., , , and . WAOA, volume 3351 of Lecture Notes in Computer Science, page 68-82. Springer, (2004)