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| article xml file uploaded | 26 August 2014 04:23 CEST | Original file | https://www.mdpi.com/2076-0817/3/1/109/xml |
| article pdf uploaded. | 23 January 2014 16:07 CET | Updated version of record | https://www.mdpi.com/2076-0817/3/1/109/pdf |
| article pdf uploaded. | 22 January 2014 16:06 CET | Version of Record | https://www.mdpi.com/2076-0817/3/1/109/pdf-vor |
