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| article xml file uploaded | 13 August 2014 12:44 CEST | Original file | https://www.mdpi.com/2072-4292/6/7/6407/xml |
| article pdf uploaded. | 14 July 2014 09:08 CEST | Updated version of record | https://www.mdpi.com/2072-4292/6/7/6407/pdf |
| article pdf uploaded. | 9 July 2014 14:04 CEST | Version of Record | https://www.mdpi.com/2072-4292/6/7/6407/pdf-vor |