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| article xml uploaded. | 14 September 2017 11:15 CEST | Original file | https://www.mdpi.com/1999-4907/8/9/343/xml |
| article pdf uploaded. | 14 September 2017 11:15 CEST | Updated version of record | https://www.mdpi.com/1999-4907/8/9/343/pdf |
| article pdf uploaded. | 13 September 2017 12:19 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/9/343/pdf-vor |
