| article html file updated | 1 September 2025 12:30 CEST | Update | https://www.mdpi.com/2312-7481/6/4/56 |
| article html file updated | 22 July 2022 23:28 CEST | Update | - |
| article html file updated | 1 November 2020 10:10 CET | Original file | - |
| article pdf uploaded. | 1 November 2020 10:08 CET | Version of Record | https://www.mdpi.com/2312-7481/6/4/56/pdf |
| article xml uploaded. | 1 November 2020 10:08 CET | Update | https://www.mdpi.com/2312-7481/6/4/56/xml |
| article xml file uploaded | 1 November 2020 10:08 CET | Original file | - |
