| article html file updated | 1 September 2025 14:32 CEST | Update | https://www.mdpi.com/2227-7390/8/12/2121 |
| article html file updated | 23 July 2022 02:45 CEST | Update | - |
| article html file updated | 2 December 2020 04:38 CET | Original file | - |
| article pdf uploaded. | 2 December 2020 04:36 CET | Updated version of record | https://www.mdpi.com/2227-7390/8/12/2121/pdf |
| article xml uploaded. | 2 December 2020 04:36 CET | Update | https://www.mdpi.com/2227-7390/8/12/2121/xml |
| article xml file uploaded | 2 December 2020 04:36 CET | Original file | - |
| article pdf uploaded. | 26 November 2020 16:07 CET | Version of Record | https://www.mdpi.com/2227-7390/8/12/2121/pdf-vor |
