| article html file updated | 1 September 2025 13:55 CEST | Update | https://www.mdpi.com/2224-2708/9/4/52 |
| article html file updated | 23 July 2022 01:47 CEST | Update | N/A |
| article html file updated | 26 November 2020 02:53 CET | Original file | N/A |
| article pdf uploaded. | 26 November 2020 02:51 CET | Updated version of record | https://www.mdpi.com/2224-2708/9/4/52/pdf |
| article xml uploaded. | 26 November 2020 02:51 CET | Update | https://www.mdpi.com/2224-2708/9/4/52/xml |
| article xml file uploaded | 26 November 2020 02:50 CET | Original file | N/A |
| article pdf uploaded. | 19 November 2020 16:25 CET | Version of Record | https://www.mdpi.com/2224-2708/9/4/52/pdf-vor |
