| article html file updated | 2 September 2025 00:27 CEST | Update | https://www.mdpi.com/1424-8220/21/6/2021 |
| article html file updated | 25 July 2022 07:25 CEST | Update | - |
| article html file updated | 16 March 2021 09:40 CET | Original file | - |
| article pdf uploaded. | 16 March 2021 09:39 CET | Updated version of record | https://www.mdpi.com/1424-8220/21/6/2021/pdf |
| article xml uploaded. | 16 March 2021 09:39 CET | Update | https://www.mdpi.com/1424-8220/21/6/2021/xml |
| article xml file uploaded | 16 March 2021 09:39 CET | Original file | - |
| article pdf uploaded. | 12 March 2021 16:03 CET | Version of Record | https://www.mdpi.com/1424-8220/21/6/2021/pdf-vor |
