| article html file updated | 23 December 2020 13:12 CET | Original file | https://www.mdpi.com/1424-8220/21/1/34 |
| article pdf uploaded. | 23 December 2020 13:10 CET | Version of Record | https://www.mdpi.com/1424-8220/21/1/34/pdf |
| article xml uploaded. | 23 December 2020 13:10 CET | Update | https://www.mdpi.com/1424-8220/21/1/34/xml |
| article xml file uploaded | 23 December 2020 13:10 CET | Original file | N/A |
