| article html file updated | 1 September 2025 15:14 CEST | Update | https://www.mdpi.com/2218-1997/6/12/231 |
| article html file updated | 23 July 2022 03:51 CEST | Update | - |
| article html file updated | 8 December 2020 03:16 CET | Update | - |
| article pdf uploaded. | 7 December 2020 07:58 CET | Updated version of record | https://www.mdpi.com/2218-1997/6/12/231/pdf |
| article xml uploaded. | 7 December 2020 07:58 CET | Update | https://www.mdpi.com/2218-1997/6/12/231/xml |
| article xml file uploaded | 7 December 2020 07:58 CET | Update | - |
| article html file updated | 4 December 2020 22:19 CET | Original file | - |
| article pdf uploaded. | 4 December 2020 12:47 CET | Version of Record | https://www.mdpi.com/2218-1997/6/12/231/pdf-vor |
| article xml uploaded. | 4 December 2020 12:47 CET | Update | - |
| article xml file uploaded | 4 December 2020 12:47 CET | Original file | - |
