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| article xml uploaded. | 25 April 2017 11:56 CEST | Original file | https://www.mdpi.com/1999-4915/9/4/86/xml |
| article pdf uploaded. | 25 April 2017 11:56 CEST | Updated version of record | https://www.mdpi.com/1999-4915/9/4/86/pdf |
| article pdf uploaded. | 21 April 2017 16:32 CEST | Version of Record | https://www.mdpi.com/1999-4915/9/4/86/pdf-vor |
