- Correspondence to Dr Anne-Sophie Evrard, Univ Lyon, Université Claude Bernard Lyon1, IFSTTAR, UMRESTTE, UMR T_9405, Bron 69675, France;
- Received November 17, 2016
- Revised March 16, 2017
- Accepted March 23, 2017
- First published April 25, 2017.
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