| article html file updated | 30 August 2025 11:19 CEST | Update | https://www.mdpi.com/2227-7102/9/1/20 |
| article html file updated | 20 July 2022 16:58 CEST | Update | - |
| article html file updated | 11 February 2020 10:39 CET | Update | - |
| article html file updated | 13 October 2019 17:50 CEST | Update | - |
| article html file updated | 27 April 2019 03:10 CEST | Update | - |
| article html file updated | 12 April 2019 23:09 CEST | Update | - |
| article html file updated | 10 April 2019 21:12 CEST | Update | - |
| article html file updated | 3 April 2019 07:22 CEST | Update | - |
| article html file updated | 22 January 2019 07:22 CET | Original file | - |
| article pdf uploaded. | 22 January 2019 07:20 CET | Version of Record | https://www.mdpi.com/2227-7102/9/1/20/pdf |
| article xml uploaded. | 22 January 2019 07:20 CET | Update | https://www.mdpi.com/2227-7102/9/1/20/xml |
| article xml file uploaded | 22 January 2019 07:20 CET | Original file | - |
