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| article pdf uploaded. | 22 January 2019 06:37 CET | Updated version of record | https://www.mdpi.com/2075-4701/9/1/70/pdf |
| article xml uploaded. | 22 January 2019 06:37 CET | Update | https://www.mdpi.com/2075-4701/9/1/70/xml |
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| article pdf uploaded. | 11 January 2019 16:44 CET | Updated version of record | https://www.mdpi.com/2075-4701/9/1/70/pdf-vor |
| article pdf uploaded. | 11 January 2019 16:37 CET | Version of Record | https://www.mdpi.com/2075-4701/9/1/70/pdf-vor |
| article xml file uploaded | 11 January 2019 16:37 CET | Original file | - |