| article html file updated | 20 October 2021 10:02 CEST | Update | https://www.mdpi.com/2226-4787/9/4/168 |
| article html file updated | 20 October 2021 02:52 CEST | Original file | N/A |
| article pdf uploaded. | 20 October 2021 02:51 CEST | Updated version of record | https://www.mdpi.com/2226-4787/9/4/168/pdf |
| article xml uploaded. | 20 October 2021 02:51 CEST | Update | https://www.mdpi.com/2226-4787/9/4/168/xml |
| article xml file uploaded | 20 October 2021 02:51 CEST | Original file | N/A |
| article pdf uploaded. | 13 October 2021 13:12 CEST | Version of Record | https://www.mdpi.com/2226-4787/9/4/168/pdf-vor |
