@article{riedler-18a,
 author = {Markus Leitner and Ivana Ljubić and Martin Riedler and Mario Ruthmair},
 doi = {10.1016/j.omega.2018.11.014},
 issn = {0305-0483},
 journal = {Omega},
 keywords = {dndpr, exact, mip, networks},
 title = {Exact approaches for the directed network design problem with relays},
 url = {http://www.sciencedirect.com/science/article/pii/S030504831830183X},
 year = {2018}
}