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| article pdf uploaded. | 21 November 2019 04:02 CET | Updated version of record | https://www.mdpi.com/2227-9067/6/11/117/pdf |
| article xml uploaded. | 21 November 2019 04:02 CET | Update | https://www.mdpi.com/2227-9067/6/11/117/xml |
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| article html file updated | 24 October 2019 06:32 CEST | Original file | - |
| article pdf uploaded. | 24 October 2019 06:31 CEST | Version of Record | https://www.mdpi.com/2227-9067/6/11/117/pdf-vor |
| article xml uploaded. | 24 October 2019 06:31 CEST | Update | - |
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