| article html file updated | 31 August 2025 16:18 CEST | Update | https://www.mdpi.com/2223-7747/9/4/446 |
| article html file updated | 21 July 2022 00:47 CEST | Update | - |
| article html file updated | 9 May 2020 04:26 CEST | Update | - |
| article html file updated | 3 April 2020 04:58 CEST | Original file | - |
| article pdf uploaded. | 3 April 2020 04:57 CEST | Updated version of record | https://www.mdpi.com/2223-7747/9/4/446/pdf |
| article xml uploaded. | 3 April 2020 04:57 CEST | Update | https://www.mdpi.com/2223-7747/9/4/446/xml |
| article xml file uploaded | 3 April 2020 04:57 CEST | Update | - |
| article pdf uploaded. | 2 April 2020 15:56 CEST | Version of Record | https://www.mdpi.com/2223-7747/9/4/446/pdf-vor |
| article xml file uploaded | 2 April 2020 15:56 CEST | Original file | - |
