| article html file updated | 31 August 2025 09:55 CEST | Update | https://www.mdpi.com/2218-1997/6/2/23 |
| article html file updated | 20 July 2022 18:26 CEST | Update | N/A |
| article html file updated | 25 February 2020 10:45 CET | Original file | N/A |
| article pdf uploaded. | 25 February 2020 10:44 CET | Updated version of record | https://www.mdpi.com/2218-1997/6/2/23/pdf |
| article xml uploaded. | 25 February 2020 10:44 CET | Update | https://www.mdpi.com/2218-1997/6/2/23/xml |
| article xml file uploaded | 25 February 2020 10:44 CET | Update | N/A |
| article pdf uploaded. | 24 January 2020 14:05 CET | Version of Record | https://www.mdpi.com/2218-1997/6/2/23/pdf-vor |
| article xml file uploaded | 24 January 2020 14:05 CET | Original file | N/A |
