| article html file updated | 24 January 2021 10:16 CET | Original file | https://www.mdpi.com/2075-4663/9/2/20 |
| article pdf uploaded. | 24 January 2021 10:15 CET | Version of Record | https://www.mdpi.com/2075-4663/9/2/20/pdf |
| article xml uploaded. | 24 January 2021 10:15 CET | Update | https://www.mdpi.com/2075-4663/9/2/20/xml |
| article xml file uploaded | 24 January 2021 10:15 CET | Original file | N/A |
