@ARTICLE{
author={Konings Rob,Kreutzberger Ekki,Maras Vladislav},
year={2013},
title={Major considerations in developing a hub-and-spoke network to improve the cost performance of container barge transport in the hinterland: the case of the port of Rotterdam},
journal={JOURNAL OF TRANSPORT GEOGRAPHY},
volume={29},
number={},
pages={63-73},
document_type={Article},
} 

@ARTICLE{
author={Konings Rob,Maras Vladislav},
year={2011},
title={Hub-and-Spoke Networks to Increase the Scope of Container-on-Barge Transport Performance Analysis},
journal={TRANSPORTATION RESEARCH RECORD},
volume={},
number={2222},
pages={90-97},
document_type={Article},
}