| article html file updated | 30 August 2025 00:21 CEST | Update | https://www.mdpi.com/2071-1050/9/2/217 |
| article html file updated | 16 July 2022 04:45 CEST | Update | - |
| article html file updated | 7 February 2020 22:46 CET | Update | - |
| article html file updated | 23 September 2019 04:29 CEST | Update | - |
| article html file updated | 4 May 2019 12:31 CEST | Update | - |
| article html file updated | 1 March 2017 10:30 CET | Update | - |
| article html file updated | 7 February 2017 04:50 CET | Original file | - |
| article xml uploaded. | 7 February 2017 04:48 CET | Original file | https://www.mdpi.com/2071-1050/9/2/217/xml |
| article pdf uploaded. | 7 February 2017 04:48 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/217/pdf |
