| article html file updated | 21 December 2020 08:54 CET | Original file | https://www.mdpi.com/2673-4109/1/3/21 |
| article pdf uploaded. | 21 December 2020 08:52 CET | Updated version of record | https://www.mdpi.com/2673-4109/1/3/21/pdf |
| article xml uploaded. | 21 December 2020 08:52 CET | Update | https://www.mdpi.com/2673-4109/1/3/21/xml |
| article xml file uploaded | 21 December 2020 08:52 CET | Original file | N/A |
| article pdf uploaded. | 3 December 2020 16:30 CET | Version of Record | https://www.mdpi.com/2673-4109/1/3/21/pdf-vor |
