| article html file updated | 31 August 2025 19:56 CEST | Update | https://www.mdpi.com/2227-9040/8/2/33 |
| article html file updated | 21 July 2022 04:22 CEST | Update | - |
| article html file updated | 29 May 2020 06:15 CEST | Original file | - |
| article pdf uploaded. | 29 May 2020 06:14 CEST | Updated version of record | https://www.mdpi.com/2227-9040/8/2/33/pdf |
| article xml uploaded. | 29 May 2020 06:14 CEST | Update | https://www.mdpi.com/2227-9040/8/2/33/xml |
| article xml file uploaded | 29 May 2020 06:14 CEST | Update | - |
| article pdf uploaded. | 9 May 2020 16:10 CEST | Version of Record | https://www.mdpi.com/2227-9040/8/2/33/pdf-vor |
| article xml file uploaded | 9 May 2020 16:10 CEST | Original file | - |