| article html file updated | 1 September 2025 10:27 CEST | Update | https://www.mdpi.com/2218-1997/6/10/171 |
| article html file updated | 22 July 2022 10:09 CEST | Update | - |
| article html file updated | 4 December 2020 04:57 CET | Update | - |
| article html file updated | 21 October 2020 06:16 CEST | Original file | - |
| article pdf uploaded. | 21 October 2020 06:15 CEST | Updated version of record | https://www.mdpi.com/2218-1997/6/10/171/pdf |
| article xml uploaded. | 21 October 2020 06:15 CEST | Update | https://www.mdpi.com/2218-1997/6/10/171/xml |
| article xml file uploaded | 21 October 2020 06:15 CEST | Original file | - |
| article pdf uploaded. | 10 October 2020 11:10 CEST | Version of Record | https://www.mdpi.com/2218-1997/6/10/171/pdf-vor |
