| article html file updated | 1 September 2025 07:23 CEST | Update | https://www.mdpi.com/2218-1997/6/9/142 |
| article html file updated | 22 July 2022 05:46 CEST | Update | - |
| article html file updated | 9 October 2020 22:10 CEST | Update | - |
| article html file updated | 3 September 2020 13:09 CEST | Original file | - |
| article pdf uploaded. | 3 September 2020 13:08 CEST | Updated version of record | https://www.mdpi.com/2218-1997/6/9/142/pdf |
| article xml uploaded. | 3 September 2020 13:08 CEST | Update | https://www.mdpi.com/2218-1997/6/9/142/xml |
| article xml file uploaded | 3 September 2020 13:08 CEST | Original file | - |
| article pdf uploaded. | 2 September 2020 15:12 CEST | Version of Record | https://www.mdpi.com/2218-1997/6/9/142/pdf-vor |
