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| article xml file uploaded | 9 October 2015 11:59 CEST | Original file | https://www.mdpi.com/1424-8220/15/9/23004/xml |
| article pdf uploaded. | 18 September 2015 12:07 CEST | Updated version of record | https://www.mdpi.com/1424-8220/15/9/23004/pdf |
| article pdf uploaded. | 15 September 2015 10:38 CEST | Updated version of record | https://www.mdpi.com/1424-8220/15/9/23004/pdf-vor |
| article pdf uploaded. | 11 September 2015 10:42 CEST | Version of Record | https://www.mdpi.com/1424-8220/15/9/23004/pdf-vor |