| article html file updated | 1 September 2025 17:09 CEST | Update | https://www.mdpi.com/2226-471X/6/1/4 |
| article html file updated | 23 July 2022 07:51 CEST | Update | - |
| article html file updated | 6 January 2021 07:16 CET | Update | - |
| article pdf uploaded. | 6 January 2021 07:14 CET | Updated version of record | https://www.mdpi.com/2226-471X/6/1/4/pdf |
| article xml uploaded. | 6 January 2021 07:14 CET | Update | https://www.mdpi.com/2226-471X/6/1/4/xml |
| article xml file uploaded | 6 January 2021 07:14 CET | Update | - |
| article html file updated | 28 December 2020 12:11 CET | Original file | - |
| article pdf uploaded. | 28 December 2020 12:10 CET | Version of Record | https://www.mdpi.com/2226-471X/6/1/4/pdf-vor |
| article xml uploaded. | 28 December 2020 12:10 CET | Update | - |
| article xml file uploaded | 28 December 2020 12:10 CET | Original file | - |
