| article html file updated | 21 December 2021 12:08 CET | Original file | https://www.mdpi.com/1999-4907/13/1/6 |
| article pdf uploaded. | 21 December 2021 12:07 CET | Version of Record | https://www.mdpi.com/1999-4907/13/1/6/pdf |
| article xml uploaded. | 21 December 2021 12:07 CET | Update | https://www.mdpi.com/1999-4907/13/1/6/xml |
| article xml file uploaded | 21 December 2021 12:07 CET | Original file | N/A |
