| article html file updated | 31 August 2025 17:29 CEST | Update | https://www.mdpi.com/2079-9721/8/2/9 |
| article html file updated | 21 July 2022 01:57 CEST | Update | N/A |
| article html file updated | 6 July 2020 17:38 CEST | Update | N/A |
| article html file updated | 15 April 2020 14:00 CEST | Original file | N/A |
| article pdf uploaded. | 15 April 2020 13:59 CEST | Version of Record | https://www.mdpi.com/2079-9721/8/2/9/pdf |
| article xml uploaded. | 15 April 2020 13:59 CEST | Update | https://www.mdpi.com/2079-9721/8/2/9/xml |
| article xml file uploaded | 15 April 2020 13:59 CEST | Original file | N/A |
