| article html file updated | 1 September 2025 12:46 CEST | Update | https://www.mdpi.com/2227-9709/7/4/51 |
| article html file updated | 22 July 2022 23:55 CEST | Update | - |
| article html file updated | 5 November 2020 09:53 CET | Original file | - |
| article pdf uploaded. | 5 November 2020 09:52 CET | Version of Record | https://www.mdpi.com/2227-9709/7/4/51/pdf |
| article xml uploaded. | 5 November 2020 09:52 CET | Update | https://www.mdpi.com/2227-9709/7/4/51/xml |
| article xml file uploaded | 5 November 2020 09:52 CET | Original file | - |
