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| article xml file uploaded | 27 November 2014 04:17 CET | Original file | https://www.mdpi.com/2073-4468/3/1/37/xml |
| article pdf uploaded. | 24 January 2014 14:39 CET | Updated version of record | https://www.mdpi.com/2073-4468/3/1/37/pdf |
| article pdf uploaded. | 16 January 2014 13:40 CET | Version of Record | https://www.mdpi.com/2073-4468/3/1/37/pdf-vor |