| article html file updated | 31 August 2025 23:50 CEST | Update | https://www.mdpi.com/1999-4923/12/6/557 |
| article html file updated | 21 July 2022 21:05 CEST | Update | - |
| article html file updated | 17 June 2020 06:18 CEST | Update | - |
| article html file updated | 17 June 2020 06:17 CEST | Original file | - |
| article pdf uploaded. | 17 June 2020 06:15 CEST | Updated version of record | https://www.mdpi.com/1999-4923/12/6/557/pdf |
| article xml uploaded. | 17 June 2020 06:15 CEST | Update | https://www.mdpi.com/1999-4923/12/6/557/xml |
| article xml file uploaded | 17 June 2020 06:15 CEST | Update | - |
| article xml file uploaded | 17 June 2020 06:15 CEST | Original file | - |
