| article html file updated | 30 August 2025 11:27 CEST | Update | https://www.mdpi.com/2077-0375/9/2/20 |
| article html file updated | 20 July 2022 17:03 CEST | Update | - |
| article html file updated | 11 February 2020 11:26 CET | Update | - |
| article html file updated | 13 October 2019 22:04 CEST | Update | - |
| article html file updated | 27 April 2019 01:39 CEST | Update | - |
| article html file updated | 12 April 2019 21:36 CEST | Update | - |
| article html file updated | 3 April 2019 09:17 CEST | Update | - |
| article html file updated | 5 March 2019 06:00 CET | Update | - |
| article html file updated | 25 January 2019 02:40 CET | Original file | - |
| article pdf uploaded. | 24 January 2019 14:16 CET | Version of Record | https://www.mdpi.com/2077-0375/9/2/20/pdf |
| article xml uploaded. | 24 January 2019 14:16 CET | Update | https://www.mdpi.com/2077-0375/9/2/20/xml |
| article xml file uploaded | 24 January 2019 14:16 CET | Original file | - |
