| article html file updated | 25 October 2021 11:45 CEST | Original file | https://www.mdpi.com/2032-6653/12/4/209 |
| article pdf uploaded. | 25 October 2021 11:44 CEST | Updated version of record | https://www.mdpi.com/2032-6653/12/4/209/pdf |
| article xml uploaded. | 25 October 2021 11:44 CEST | Update | https://www.mdpi.com/2032-6653/12/4/209/xml |
| article xml file uploaded | 25 October 2021 11:44 CEST | Original file | - |
| article pdf uploaded. | 23 October 2021 09:00 CEST | Version of Record | https://www.mdpi.com/2032-6653/12/4/209/pdf-vor |
