| article html file updated | 1 September 2025 07:37 CEST | Update | https://www.mdpi.com/2218-1997/6/9/144 |
| article html file updated | 22 July 2022 06:05 CEST | Update | N/A |
| article html file updated | 9 September 2020 04:03 CEST | Original file | N/A |
| article pdf uploaded. | 9 September 2020 04:02 CEST | Updated version of record | https://www.mdpi.com/2218-1997/6/9/144/pdf |
| article xml uploaded. | 9 September 2020 04:02 CEST | Update | https://www.mdpi.com/2218-1997/6/9/144/xml |
| article xml file uploaded | 9 September 2020 04:02 CEST | Original file | N/A |
| article pdf uploaded. | 4 September 2020 17:59 CEST | Version of Record | https://www.mdpi.com/2218-1997/6/9/144/pdf-vor |
