| article html file updated | 1 September 2025 15:19 CEST | Update | https://www.mdpi.com/2199-8531/6/4/181 |
| article html file updated | 23 July 2022 03:59 CEST | Update | - |
| article html file updated | 8 December 2020 09:45 CET | Update | - |
| article html file updated | 8 December 2020 03:55 CET | Original file | - |
| article pdf uploaded. | 7 December 2020 13:21 CET | Updated version of record | https://www.mdpi.com/2199-8531/6/4/181/pdf |
| article xml uploaded. | 7 December 2020 13:21 CET | Update | https://www.mdpi.com/2199-8531/6/4/181/xml |
| article xml file uploaded | 7 December 2020 13:21 CET | Original file | - |
| article pdf uploaded. | 5 December 2020 13:23 CET | Version of Record | https://www.mdpi.com/2199-8531/6/4/181/pdf-vor |
