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The asymmetric VPN tree problem: polyhedral results and Branch-and-Cut

Ibrahima Diarrassouba, Pedro Henrique P.V. Liguori and A. Ridha Mahjoub
Electronic Notes in Discrete Mathematics 64 315 (2018)
DOI: 10.1016/j.endm.2018.02.006
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Experiments on virtual private network design with concave capacity costs

Andrea Lodi and Ahmad Moradi
Optimization Letters 12 (5) 945 (2018)
DOI: 10.1007/s11590-018-1254-x
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