| article html file updated | 1 September 2025 16:58 CEST | Update | https://www.mdpi.com/1424-8220/21/1/68 |
| article html file updated | 23 July 2022 07:13 CEST | Update | - |
| article html file updated | 27 December 2020 06:24 CET | Update | - |
| article pdf uploaded. | 27 December 2020 06:23 CET | Updated version of record | https://www.mdpi.com/1424-8220/21/1/68/pdf |
| article xml uploaded. | 27 December 2020 06:23 CET | Update | https://www.mdpi.com/1424-8220/21/1/68/xml |
| article xml file uploaded | 27 December 2020 06:22 CET | Update | - |
| article html file updated | 24 December 2020 16:42 CET | Original file | - |
| article pdf uploaded. | 24 December 2020 16:41 CET | Version of Record | https://www.mdpi.com/1424-8220/21/1/68/pdf-vor |
| article xml uploaded. | 24 December 2020 16:41 CET | Update | - |
| article xml file uploaded | 24 December 2020 16:41 CET | Original file | - |
