| article html file updated | 30 August 2025 00:21 CEST | Update | https://www.mdpi.com/2071-1050/9/2/227 |
| article html file updated | 16 July 2022 04:46 CEST | Update | - |
| article html file updated | 7 February 2020 22:50 CET | Update | - |
| article html file updated | 23 September 2019 04:51 CEST | Update | - |
| article html file updated | 4 May 2019 12:23 CEST | Update | - |
| article html file updated | 1 March 2017 10:32 CET | Update | - |
| article html file updated | 8 February 2017 11:23 CET | Original file | - |
| article xml uploaded. | 8 February 2017 11:16 CET | Original file | https://www.mdpi.com/2071-1050/9/2/227/xml |
| article pdf uploaded. | 8 February 2017 11:16 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/227/pdf |