| article html file updated | 31 August 2025 08:07 CEST | Update | https://www.mdpi.com/2227-9040/8/1/6 |
| article html file updated | 19 July 2022 20:12 CEST | Update | N/A |
| article html file updated | 2 April 2020 09:18 CEST | Update | N/A |
| article html file updated | 14 February 2020 23:51 CET | Update | N/A |
| article html file updated | 10 January 2020 03:02 CET | Original file | N/A |
| article pdf uploaded. | 3 January 2020 10:04 CET | Version of Record | https://www.mdpi.com/2227-9040/8/1/6/pdf |
| article xml uploaded. | 3 January 2020 10:04 CET | Update | https://www.mdpi.com/2227-9040/8/1/6/xml |
| article xml file uploaded | 3 January 2020 10:04 CET | Original file | N/A |
