| article html file updated | 1 September 2025 20:16 CEST | Update | https://www.mdpi.com/2218-1997/7/2/31 |
| article html file updated | 24 July 2022 08:46 CEST | Update | N/A |
| article html file updated | 8 February 2021 02:48 CET | Update | N/A |
| article pdf uploaded. | 8 February 2021 02:46 CET | Updated version of record | https://www.mdpi.com/2218-1997/7/2/31/pdf |
| article xml uploaded. | 8 February 2021 02:46 CET | Update | https://www.mdpi.com/2218-1997/7/2/31/xml |
| article xml file uploaded | 8 February 2021 02:46 CET | Update | N/A |
| article html file updated | 7 February 2021 06:57 CET | Original file | N/A |
| article pdf uploaded. | 7 February 2021 06:55 CET | Updated version of record | https://www.mdpi.com/2218-1997/7/2/31/pdf-vor |
| article xml uploaded. | 7 February 2021 06:55 CET | Update | N/A |
| article xml file uploaded | 7 February 2021 06:55 CET | Original file | N/A |
| article pdf uploaded. | 31 January 2021 11:29 CET | Version of Record | https://www.mdpi.com/2218-1997/7/2/31/pdf-vor |
