| article html file updated | 31 August 2025 22:55 CEST | Update | https://www.mdpi.com/1999-4923/12/6/521 |
| article html file updated | 21 July 2022 20:10 CEST | Update | - |
| article html file updated | 8 June 2020 08:30 CEST | Original file | - |
| article pdf uploaded. | 8 June 2020 08:28 CEST | Version of Record | https://www.mdpi.com/1999-4923/12/6/521/pdf |
| article xml uploaded. | 8 June 2020 08:28 CEST | Update | https://www.mdpi.com/1999-4923/12/6/521/xml |
| article xml file uploaded | 8 June 2020 08:28 CEST | Original file | - |
