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Feldmann, Andreas Emil, Könemann, Jochen, Olver, Neil 
ORCID: 0000-0001-8897-5459 and Sanitàa, Laura
(2016)
On the equivalence of the bidirected and hypergraphic relaxations for Steiner tree.
Mathematical Programming, 160 (1-2).
379 - 406.
ISSN 0025-5610
Abdi, Ahmad ORCID: 0000-0002-3008-4167, Feldmann, Andreas Emil, Guenin, Bertrand, Könemann, Jochen and Sanita, Laura
(2016)
Lehman's theorem and the directed Steiner tree problem.
SIAM Journal on Discrete Mathematics, 30 (1).
pp. 141-153.
ISSN 0895-4801
Könemann, Jochen, Olver, Neil ORCID: 0000-0001-8897-5459, Pashkovich, Kanstantsin, Ravi, R, Swamy, Chaitanya and Vygen, Jens
(2017)
On the integrality gap of the prize-collecting steiner forest LP.
In: Approx 2017 - Random 2017, 2017-08-16 - 2017-08-18, UC Berkley, Berkley, United States, USA.
Feldmann, Andreas Emil, Könemann, Jochen, Olver, Neil ORCID: 0000-0001-8897-5459 and Sanitàa, Laura
(2014)
On the equivalence of the bidirected and hypergraphic relaxations for Steiner tree.
In: 17th. International Workshop on Approximation Algorithms for Combinatorial Optimization Problems: Random-Approx 2014, 2014-09-04 - 2014-09-06, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain, ESP.
