| article html file updated | 1 September 2025 07:20 CEST | Update | https://www.mdpi.com/2218-1997/6/9/141 |
| article html file updated | 22 July 2022 05:43 CEST | Update | - |
| article html file updated | 7 September 2020 12:35 CEST | Original file | - |
| article pdf uploaded. | 7 September 2020 12:33 CEST | Updated version of record | https://www.mdpi.com/2218-1997/6/9/141/pdf |
| article xml uploaded. | 7 September 2020 12:33 CEST | Update | https://www.mdpi.com/2218-1997/6/9/141/xml |
| article xml file uploaded | 7 September 2020 12:33 CEST | Original file | - |
| article pdf uploaded. | 2 September 2020 12:35 CEST | Version of Record | https://www.mdpi.com/2218-1997/6/9/141/pdf-vor |
