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| article supplementary file uploaded. | 28 January 2014 10:05 CET | - | https://www.mdpi.com/2223-7747/3/1/70#supplementary |
| article pdf uploaded. | 27 January 2014 17:27 CET | Version of Record | https://www.mdpi.com/2223-7747/3/1/70/pdf |
