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| article xml file uploaded | 25 July 2014 12:27 CEST | Original file | https://www.mdpi.com/2071-1050/6/7/4152/xml |
| article pdf uploaded. | 2 July 2014 14:51 CEST | Updated version of record | https://www.mdpi.com/2071-1050/6/7/4152/pdf |
| article pdf uploaded. | 1 July 2014 09:23 CEST | Version of Record | https://www.mdpi.com/2071-1050/6/7/4152/pdf-vor |