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| Authors: | Richard H. M. Emmerink and Erik T. Verhoef and Peter Nijkamp and Piet Rietveld |
| URL: | http://www.sciencedirect.com/science/article/B6V64-3SX6MX0-4/1/84d751b7fcea5f1c7cade0b9861b805d |
| Tags: | Road congestion traffic |