| article html file updated | 31 August 2025 18:36 CEST | Update | https://www.mdpi.com/1996-1944/13/9/2021 |
| article html file updated | 21 July 2022 03:02 CEST | Update | N/A |
| article html file updated | 28 April 2020 16:37 CEST | Original file | N/A |
| article pdf uploaded. | 28 April 2020 16:35 CEST | Updated version of record | https://www.mdpi.com/1996-1944/13/9/2021/pdf |
| article xml uploaded. | 28 April 2020 16:35 CEST | Update | https://www.mdpi.com/1996-1944/13/9/2021/xml |
| article xml file uploaded | 28 April 2020 16:35 CEST | Update | N/A |
| article pdf uploaded. | 26 April 2020 09:35 CEST | Version of Record | https://www.mdpi.com/1996-1944/13/9/2021/pdf-vor |
| article xml file uploaded | 26 April 2020 09:35 CEST | Original file | N/A |
