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| article xml uploaded. | 8 September 2017 10:05 CEST | Update | https://www.mdpi.com/2073-4441/9/9/678/xml |
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| article pdf uploaded. | 8 September 2017 10:05 CEST | Updated version of record | https://www.mdpi.com/2073-4441/9/9/678/pdf |
| article pdf uploaded. | 7 September 2017 12:15 CEST | Version of Record | https://www.mdpi.com/2073-4441/9/9/678/pdf-vor |
