| article html file updated | 31 August 2025 10:57 CEST | Update | https://www.mdpi.com/2223-7747/9/2/206 |
| article html file updated | 20 July 2022 19:28 CEST | Update | - |
| article html file updated | 6 March 2020 08:57 CET | Update | - |
| article html file updated | 29 February 2020 15:01 CET | Original file | - |
| article pdf uploaded. | 29 February 2020 14:59 CET | Updated version of record | https://www.mdpi.com/2223-7747/9/2/206/pdf |
| article xml uploaded. | 29 February 2020 14:59 CET | Update | https://www.mdpi.com/2223-7747/9/2/206/xml |
| article xml file uploaded | 29 February 2020 14:59 CET | Update | - |
| article pdf uploaded. | 6 February 2020 15:21 CET | Version of Record | https://www.mdpi.com/2223-7747/9/2/206/pdf-vor |
| article xml file uploaded | 6 February 2020 15:21 CET | Original file | - |
