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Available online at www.sciencedirect.com
Procedia - Social and Behavioral Sciences 48 (2012) 642 – 652
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1877-0428 © 2012 Published by Elsevier Ltd. Selection and/or peer review under responsibility of the Programme Committee of the Transport Research Arena 2012 doi:10.1016/j.sbspro.2012.06.1042
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