| article html file updated | 30 November 2021 10:27 CET | Original file | https://www.mdpi.com/2410-3888/6/4/69 |
| article pdf uploaded. | 30 November 2021 10:26 CET | Version of Record | https://www.mdpi.com/2410-3888/6/4/69/pdf |
| article xml uploaded. | 30 November 2021 10:26 CET | Update | https://www.mdpi.com/2410-3888/6/4/69/xml |
| article xml file uploaded | 30 November 2021 10:26 CET | Original file | N/A |
