| article html file updated | 1 September 2025 12:36 CEST | Update | https://www.mdpi.com/2226-471X/5/4/51 |
| article html file updated | 22 July 2022 23:39 CEST | Update | - |
| article html file updated | 9 November 2020 08:51 CET | Update | - |
| article pdf uploaded. | 9 November 2020 08:49 CET | Updated version of record | https://www.mdpi.com/2226-471X/5/4/51/pdf |
| article xml uploaded. | 9 November 2020 08:49 CET | Update | https://www.mdpi.com/2226-471X/5/4/51/xml |
| article xml file uploaded | 9 November 2020 08:49 CET | Update | - |
| article html file updated | 3 November 2020 11:32 CET | Original file | - |
| article pdf uploaded. | 3 November 2020 11:31 CET | Version of Record | https://www.mdpi.com/2226-471X/5/4/51/pdf-vor |
| article xml uploaded. | 3 November 2020 11:31 CET | Update | - |
| article xml file uploaded | 3 November 2020 11:31 CET | Original file | - |
