| article html file updated | 1 September 2025 15:13 CEST | Update | https://www.mdpi.com/2218-1997/6/12/230 |
| article html file updated | 23 July 2022 03:50 CEST | Update | - |
| article html file updated | 8 December 2020 03:13 CET | Original file | - |
| article pdf uploaded. | 7 December 2020 10:10 CET | Updated version of record | https://www.mdpi.com/2218-1997/6/12/230/pdf |
| article xml uploaded. | 7 December 2020 10:10 CET | Update | https://www.mdpi.com/2218-1997/6/12/230/xml |
| article xml file uploaded | 7 December 2020 10:10 CET | Original file | - |
| article pdf uploaded. | 4 December 2020 11:56 CET | Version of Record | https://www.mdpi.com/2218-1997/6/12/230/pdf-vor |
