| article html file updated | 21 December 2021 14:31 CET | Original file | https://www.mdpi.com/2077-1444/13/1/4 |
| article pdf uploaded. | 21 December 2021 14:30 CET | Version of Record | https://www.mdpi.com/2077-1444/13/1/4/pdf |
| article xml uploaded. | 21 December 2021 14:30 CET | Update | https://www.mdpi.com/2077-1444/13/1/4/xml |
| article xml file uploaded | 21 December 2021 14:30 CET | Original file | N/A |
