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| article xml uploaded. | 14 June 2018 08:00 CEST | Update | https://www.mdpi.com/2071-1050/10/6/1971/xml |
| article pdf uploaded. | 14 June 2018 08:00 CEST | Updated version of record | https://www.mdpi.com/2071-1050/10/6/1971/pdf |
| article html file updated | 14 June 2018 07:51 CEST | Update | - |
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| article pdf uploaded. | 12 June 2018 11:48 CEST | Version of Record | https://www.mdpi.com/2071-1050/10/6/1971/pdf-vor |
