| article html file updated | 30 August 2025 00:28 CEST | Update | https://www.mdpi.com/2072-6694/9/2/20 |
| article html file updated | 16 July 2022 04:59 CEST | Update | - |
| article html file updated | 7 February 2020 23:58 CET | Update | - |
| article html file updated | 23 September 2019 11:09 CEST | Update | - |
| article html file updated | 4 May 2019 10:05 CEST | Update | - |
| article html file updated | 2 March 2017 08:57 CET | Update | - |
| article html file updated | 22 February 2017 09:35 CET | Original file | - |
| article xml uploaded. | 22 February 2017 09:33 CET | Update | https://www.mdpi.com/2072-6694/9/2/20/xml |
| article xml uploaded. | 22 February 2017 09:33 CET | Original file | - |
| article pdf uploaded. | 22 February 2017 09:33 CET | Version of Record | https://www.mdpi.com/2072-6694/9/2/20/pdf |
